please help me get this PLEASE

Please Help Me Get This PLEASE

Answers

Answer 1

The shuttlecock began 7 m above the ground and then fell through the vacuum. Therefore, option (A) is correct.

What is the velocity vs time graph?

A velocity vs time graph can be described as a type of graph that compares the change in the velocity over a period of time. This graph can be used to describe both the velocity, the direction it is moving, its acceleration, and the displacement.

The slope in a velocity vs time graph is equal to the acceleration of the object and the area under a velocity-time graph is equal to displacement.

In the given height vs time graph, the height of the shuttlecock is 7 meters at time t = 0. If the shuttlecock fell through the thick air, then its acceleration will decrease due to air resistance.

But the blue line is showing constant acceleration as there is no air resistance so the shuttlecock fell through the vacuum.

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Related Questions

write a short note on a simple microscope

Answers

Answer:

A simple microscope is simple in structure It was invented by Robert Hook It is less convenient to use it can only helps us to detect the virus but not bacteria It is cheap compared to other microscope

A simple microscope is a magnifying glass that has a double convex lens with a short focal length. Examples of this kind of instrument include the hand lens and reading lens. When an object is kept near the lens, then its principal focus with an image is produced, which is erect and bigger than the original object.

in the earth's magnetic field experiment, you plotted a graph of frequency squared versus the current in the coils. these two quantities were related by if the linear regression provides a slope of 55.2 and a y-intercept of 0.79, what is your experimental value for the earth's magnetic field? format of answer:

Answers

Your experimental value for the earth's magnetic field Be = 1.43nT is the correct answer.

What is Earth’s magnetic field?

Earth's magnetic field is a naturally occurring, complex force field that surrounds the planet. It is generated by the Earth's core, which is composed of iron and nickel, and is responsible for protecting the Earth from charged particles and other cosmic radiation. The magnetic field is constantly changing and is believed to be generated by the movement of molten metals in the Earth's outer core. This movement creates electric currents which generate the magnetic field.

Given equation by which the given quantities are related by

f2 = (µk/4π2m) I + (µk/4[tex]\pi ^{2}[/tex]m) Be

Here,

Slope = µk/4[tex]\pi ^{2}[/tex]m

µk/4π2m = 56.6

For y – intercept

(µk/4π2m) Be = 0.81

(56.6/K) Be = 0.81

Be = (0.81/56.6) K

Here,

K = [tex]10^{-7}[/tex] N/m

Thus,

Be = (0.81/56.6)[tex]10^{-7}[/tex]

Be = 1.43nT

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How would the forces from a header with such a light soccer ball cause a concussion.

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A concussion can be caused by the forces from a header with a light soccer ball if the ball is struck with a high level of force.

When a soccer ball is struck with a high level of force, it can create a shock wave that travels through the ball and into the head of the player who struck the ball. This shock wave can cause the brain to rapidly move back and forth inside the skull, resulting in trauma to the brain tissue.

The likelihood of a concussion occurring from a header with a light soccer ball depends on a variety of factors, including the speed and angle at which the ball is struck, the size and mass of the ball, and the position of the player's head when the ball is struck.

Players who are struck in the head by a soccer ball, particularly at high speeds or with high levels of force, are at risk of sustaining a concussion or other head injury. It is important for players to be aware of the potential for concussion and to take precautions to protect themselves from injury.

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Work out the current flowing when charge is transferred at a rate of:

a) 4.5 C every second
b) 192 C per minute
c) 16.56 kC an hour
d) 1.8 C every 0.6 s
e) 3.2 C every 1.6 s
f) 33.8 C every 2.6 s
g) 147.2 C every 23 s
h) 7920 C every 15 minutes
i) 900 C every half an hour​

Answers

The current flowing when the charge is transfered at different rates are:

A. 4.5 A4.5 A

B. 3.2 A

C. 4.6 A

D. 3 A

E. 2 A

F. 13 A

G. 6.4 A

H. 8.8 A

I. 0.5 A

How do I determine the current?

We know that charge, current and time are related by the following formula:

Charge (Q) = Electric current (I) × time (t)

Q = It

Divide by t

I = Q / t

With the above formula, we can obtain the current. Details below:

A. How do I determine the current?

Charge (Q) = 4.5 CTime (t) = 1 sCurrent (I) = ?

I = Q / t

I = 4.5 / 1

I = 4.5 A

B. How do I determine the current?

Charge (Q) = 192 CTime (t) = 1 min = 60 sCurrent (I) = ?

I = Q / t

I = 192 / 60

I = 3.2 A

C. How do I determine the current?

Charge (Q) = 16.56 KC = 16.56 × 1000 = 16560 CTime (t) = 1 h = 1 × 60 × 60 = 3600 sCurrent (I) = ?

I = Q / t

I = 16560 / 3600

I = 4.6 A

D. How do I determine the current?

Charge (Q) = 1.8 CTime (t) = 0.6 sCurrent (I) = ?

I = Q / t

I = 1.8 / 0.6

I = 3 A

E. How do I determine the current?

Charge (Q) = 3.2 CTime (t) = 1.6 sCurrent (I) = ?

I = Q / t

I = 3.2 / 1.6

I = 2 A

F. How do I determine the current?

Charge (Q) = 33.8 CTime (t) = 2.6 sCurrent (I) = ?

I = Q / t

I = 33.8 / 2.6

I = 13 A

G. How do I determine the current?

Charge (Q) = 147.2 CTime (t) = 2.6 sCurrent (I) = ?

I = Q / t

I = 147.2 / 23

I = 6.4 A

H. How do I determine the current?

Charge (Q) = 7920 CTime (t) = 15 mins = 15 × 60 = 900 sCurrent (I) = ?

I = Q / t

I = 7920 / 900

I = 8.8 A

I. How do I determine the current?

Charge (Q) = 7920 C

Time (t) = half hour = 30 mins = 30 × 60 = 1800 s

Current (I) = ?

I = Q / t

I = 900 / 1800

I = 0.5 A

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how did our solar system begin to form? a large cloud of dust and gas began to contract under the force of gravity. a large cloud of dust and gas began to contract under the force of magnetism. a large cloud of dust and gas began to expand under the force of gravity. a large cloud of dust and gas began to expand under the force of magnetism.

Answers

The cause of our solar system beginning to form is A: "a large cloud of dust and gas began to contract under the force of gravity."

Our solar system evolved from a dense cloud of interstellar gas and dust some 4.6 billion years ago. The cloud collapsed, probably as a result of the shockwave from a nearby exploding star known as a supernova. When this dust cloud collapsed, it created a solar nebula, which is a spinning, swirling disc of material.

It means that the formation of our solar system began around 4.6 billion years ago with the gravitational collapse of a small part of a larger molecular cloud.

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Water has a density of 1g/cm³. Describe qn investigation that could test whether a material has a density less then, greater than, or equal to water and identify the independent and dependent variables

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An investigation that could test whether a material has a density less than, greater than, or equal to water will involve placing the material in a given volume of water in a beaker and observing whether the material will float or sink in water.

the independent  variable is the volume of water

The dependent variable is the density of the material

What is the density of a substance?

The density of a substance is the ratio of the mass of the substance to the volume of the substance.

Mathematically;

Density = mass / volume

To determine the density of a substance, the density of that substance is compared to that of water.

A substance that has a density less than water will float in water.

A substance that has a density greater than water will sink in water.

A substance that has a density equal to water will just float in water.

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what quantities in your calculation for standing wave frequencies would change by the addition of a small amount of weight to the mass hanger? if your standing wave goes away from this added mass, how would you restore it?

Answers

The fundamental frequency, which is also known as the instrument's first harmonic, is the lowest pitch that every instrument can play.

Is the lowest frequency the first harmonic?

The fundamental frequency is the lowest frequency that can be produced by a certain instrument.A first harmonic of a instrument is another name for the fundamental frequency.

What frequency is the first harmonic?

The fundamental frequency is another name for the first harmonic.It is the frequency's lowest attainable value.Simply said, the term "first harmonic" refers to a wave that consists of simply two nodes and an antinode.

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How do you measure the strength of a magnet?

Answers

Measurements of magnet strength can be made in a variety of ways, depending on which is most practical for a given application. Here are a few popular units for measuring magnet strength.

Different methods to measure strength of magnet?

1. Tesla

The unit of magnetic force denoted by the letter T is called a tesla. It describes the residual flux density, or the density of a magnetic field.

There are numerous methods to define a tesla in terms of other scientific units of measurement. For instance:

T = kg / (A * s2)

2. Gauss

A magnet is frequently made magnetic by the application of an external magnetic force. The magnetic force that remains in the magnet after the removal of the external force is referred to as remanence.

3. Oersted

Oersteds (Oe), are units used to quantify resistance to demagnetization or coercivity.

4. kilograms

Magnet pull strength is measured in kilograms in terms of magnetism.

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What is conflict management in scrum?

Answers

The employment of tactics to settle disputes or reduce tension is known as conflict management.

In order to identify the issue, explore solutions, and develop overarching goals that call for cooperation from the disputing parties, conflict resolution approaches involve hosting meetings for the disputing parties. Knowing how to recognize problems and handle them in a reasonable, equitable, and effective manner is the practice of conflict management. It is the process of resolving (seen) conflicts or differences resulting from, for instance, different ideas, goals, and wants. Team members employ conflict management strategies to resolve any disputes that develop throughout a Scrum project. This method of handling conflicts is frequently competitive and usually ends in a Win-Lose situation. The team needs to be led by the scrum master, who must convey to them that conflict is a regular issue in the workplace and can be managed by taking an assertive stance. The team's leader is responsible for making sure that the team members' concerns are understood and addressed.

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Which of the following planets or moons has an atmosphere consisting mainly of hydrogen and helium with some methane?
A) Venus B) Saturn C) Titan D) Uranus

Answers

Answer:

It is D) Uranus

a proton located at the origin is accelerated in the -y direction for a brief time.(a) how much time passes before a detector located at <0.2, 0, 0> m detects a radiative electric field? s(b) what is the direction of the radiative electric field observed at this location?---select---(c) if the accelerated particle had been an electron instead of a proton, what would have been the direction of the radiative electric field at this location?---select---

Answers

The x axis supports a proton and an electron. At x = -d, the proton is located, while at x = +d, the electron.

What does a proton and electron collectively mean?

One of the three main types of particles within an atom is an electron that is bonded to it; the other two are protons and neutrons. The nucleus of an atom is made up of electrons, protons, and neutrons together. The positive charge of a proton balances the negative charge of an electron.

What is electron and proton with example?

Electrons are incredibly light, negatively charged particles. These electrons move in distinct orbits around the nucleus. (ii) Protons have a mass of roughly 1 amu and are positively charged particles. These positively charged particles can be found in the nucleus, which sits in the center of the atom.

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A pendulum consists of a small object of mass M and width d attached to a string of length L. In an experiment, the pendulum is pulled back so that the string makes an angle θ with the vertical and is released from rest. The object's path is shown by the dashed arc, and its velocity is determined by measuring the time t it takes the object to pass through a photogate located at the lowest point in the path. The speed v is then calculated by dividing d by t. Given θ and L, the object's kinetic and potential energies are calculated and compared. Which of the following sources of experimental error could cause the calculated kinetic energy of the object at the bottom of the path to be larger than the calculated value for the change in gravitational potential energy of the object-Earth system as the object moves from its release point to the lowest point in its path?

A) The measurement of L is larger than the actual value.
B) The measurement of θ is larger than the actual value.
C) Air resistance is ignored.
D) The measurement of d is larger than the actual value.
E) The measurement of M is larger than the actual value.

Answers

The source of experimental error that could cause the calculated kinetic energy of the object at the bottom of the path to be larger than the calculated value for the change in gravitational potential energy of the object-Earth system as the object moves from its release point to the lowest point in its path is "The measurement of d is larger than the actual value".

option D is the correct answer.

What is the kinetic energy of an object?

The kinetic energy of an object is the energy possessed by the object due to the motion of the object at a given time period.

Mathematically, the formula for kinetic energy of an object is given as;

K.E = ¹/₂mv²

Where;

m is the mass of the objectv is the speed of the object

From the equation given above, the kinetic energy of an object depends on the mass and velocity of the object.

If the speed v of the object is then calculated by dividing d by t, then error is from the speed calculated, and implies that the main error is the width d, from which the speed is calculated.

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You are standing over a 30 m cliff with a water fall. What is the potential energy of 300 kg of water as it starts the decent from the top of the waterfall? Remember, where g = 9.81 m/s2

Answers

Answer:

Therefore, the potential energy of 300 kg of water as it starts the descent from the top of the 30 m waterfall is 294.3 Joules.

Explanation:

In this case, you are given that the mass of the water is 300 kg, and the height of the waterfall is 30 m. The acceleration due to gravity is given as 9.81 m/s2. Plugging these values into the formula, you can find the potential energy of the water as it starts the descent from the top of the waterfall:

PE = 300 kg * 9.81 m/s2 * 30 m

= 294.3 kg * m^2/s^2

= 294.3 Joules

The potential energy of 300 kg of water as it starts the descent from the top of the 30 m waterfall is 294.3 Joules.

What is potential energy?

Potential energy is a form of stored energy that is dependent on the relationship between different system components. When a spring is compressed or stretched, its potential energy increases. If a steel ball is raised above the ground as opposed to falling to the ground, it has more potential energy.

Given parameters:

Mass of the water: m = 300 kg.

Acceleration due to gravity: g = 9.81 m/s²

Height: h = 30 m.

Hence, potential energy of the water at the top of the waterfall =

mass × acceleration due to gravity × height

= 300 kg × 9.81 m/s² ×30 m

= 294.3 kg-m²/s²

= 294.3 Joules

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A change of phase takes place at a constant?

a. heat.
b. volume.
c. temperature
d. pressure.

Answers

"A change of phase takes place at a constant temperature."

A substance changing its phase by a physical process is called a phase change. The shift often happens when heat is applied or removed at a specific temperature, also referred to as the substance's melting or boiling point.

Both when the system receives enough energy and when the pressure on the system changes, these changes take place.

The energy that is given during a change in the state of matter is used to alter the binding energies rather than boost the kinetic energy of the molecules. As a result, the temperature doesn't change.

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What are the 3 types of genetics?

Answers

Single-gene, chromosomal, and multifactorial genetic illnesses can be grouped into these three main categories.

What three genetic principles underlie evolution?

Three factors lead to evolution through natural selection: variation among individuals within a species, heritable variation, and an overpopulation of organisms relative to available resources.

What is genetics, and why is it significant?

The role that certain genes or gene families play in health and disease is the primary focus of genetic study. Understanding genetic influences and genetic anomalies is necessary to advance health promotion and disease prevention. The study of genetics covers how a person inherits traits from their parents. It explains how features that are straightforward like eye color or complex like disease vulnerability run in families.

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how much work is done on a vacuum cleaner pulled 5 m by a force of 62n at an angle of 30 degrees above the horizontal

Answers

The work done by the vacuum cleaner which produced a force of 62 N is 268.77 J

The force produced by the vacuum cleaner = 62 N

The distance traveled by the vacuum cleaner = 5 m

The angle at which the vacuum cleaner is kept = 30°

The work done by the vacuum cleaner can be found using the formula,

           W = Fdcosθ

where W is the work done

           F is the force

           d is the distance traveled

           θ is the angle at which the vacuum cleaner is kept

Let us substitute the known values in the above equation, we get

        W = 62 x 5 x cos 30°

            =  310 x 0.867

            = 268.77 J

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what is alpha decay in physics

Answers

Alpha particles have a charge +2e decay is far and away from the foremost common sort of cluster decay, where the parent atom ejects an outlined daughter collection of nucleons, leaving another defined product behind. Like in case of other cluster decays, Alpha decay is also a fundamentally quantum tunnelling process.

Understanding Q Value in Alpha Decay:

In Physics, the Q-value is defined as the difference between the sum of the rest masses of original reactants and the sum of final product of masses. In simpler terms, we can say that the Q-value is the difference between the final and initial mass energy of the decayed products.

For the alpha decay equations, this Q-value is,

Q = (mX – mY – mHe) c2 (he-helium)

The energy Q derived from this decay is divided equally into the total transformed nucleus and the Helium nucleus.  

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Answer: alpha decay, type of radioactive disintegration in which some unstable atomic nuclei dissipate excess energy by spontaneously ejecting an alpha particle.

Explanation:

Calculate (in MeV) the binding energy per nucleon for 14N.

Calculate (in MeV) the binding energy per nucleon for 56Fe.

Calculate (in MeV) the binding energy per nucleon for 207Pb.

Answers

The binding energy per nucleon for ¹⁴N is 7.48 MeV.

The binding energy per nucleon for ⁵⁶Fe is 8.79 MeV.

The binding energy per nucleon for ²⁰⁷Pb is 7.87 MeV.

The formula to calculate the mass defect for [tex]^A_Z X[/tex]

ΔM = (Z × mp) + (N × mn) - m

mp = mass of proton = 1.007825 umn = mass of neutron = 1.008665 um = mass of an atomic nucleus

To calculate the binding energy per nucleon

BE = (ΔM × 931.5 MeV) ÷ A

For [tex]^{14}_7 N[/tex]

A = 14Z = 7N = A - Z = 14 - 7 = 7mass of nitrogen nucleus = 14.00307 uThe mass defect
ΔM = (Z × mp) + (N × mn) - m
ΔM = (7 × 1.007825) + (7 × 1.008665) - 14.00307
ΔM = 7.054775 + 7.060655 - 14.00307
ΔM = 0.11236 amuThe binding energy per-nucleon
BE = (ΔM × 931.5 MeV) ÷ A
BE = (0.11236 × 931.5 MeV) ÷ 14
BE = 104.66334 ÷ 14
BE = 7.48 MeV

For [tex]^{56}_{26} Fe[/tex]

A = 56Z = 26N = A - Z = 56 - 26 = 30mass of iron nucleus = 55.934939 uThe mass defect
ΔM = (Z × mp) + (N × mn) - m
ΔM = (26 × 1.007825) + (30 × 1.008665) - 55.934939
ΔM = 26.20345 + 30.25995 - 55.934939
ΔM = 0.528461 amuThe binding energy per-nucleon
BE = (ΔM × 931.5 MeV) ÷ A
BE = (0.528461 × 931.5 MeV) ÷ 56
BE = 492.261 ÷ 56
BE = 8.79 MeV

For [tex]^{207}_{82} Pb[/tex]

A = 207Z = 82N = A - Z = 207 - 82 = 125mass of lead nucleus = 206.975880 uThe mass defect
ΔM = (Z × mp) + (N × mn) - m
ΔM = (82 × 1.007825) + (125 × 1.008665) - 206.975880
ΔM = 82.64165 + 126.083125 - 206.975880
ΔM = 1.748895 amuThe binding energy per-nucleon BE = (ΔM × 931.5 MeV) ÷ A
BE = (1.748895 × 931.5 MeV) ÷ 207
BE = 1,629.09 ÷ 207
BE = 7.87 MeV

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The coordinates of a bird flying in the x-y plane are given by x(t)=αt and y(t)=3.0m−βt2, where α=2.4m/s and β=1.2m/s^-2. Calculate the velocity as a function of time. Can anyone please help me out?

Answers

The parametric equations of the velocity as a function of time are Vx (t) = 2.4 and Vy (t) = - 2.4 · t, respectively.

How to find the parametric equations of the velocity

Parametric equations are equations in terms of a single variable t, the velocity of the particle is the first derivative of position, whose definition is shown below:

Vx (t) = dx (t) / dt

Vy (t) = dy (t) / dt

Where:

dx (t) / dt - First derivative of x(t).dy (t) / dt - Second derivative of y(t).

Physically speaking, the single variable t represents time.

The derivative are found by derivative rules. If we know that x (t) = α · t and y(t) = 3 - β · t², then the velocity functions are:

Vx (t) = α

α = 2.4 m / s

Vx (t) = 2.4

Vy (t) = - 2 · β · t

β = 1.2 m / s²

Vy (t) = - 2.4 · t

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we give 65 joules as heat to a gas, which then expands isobarically. the gas molecules rotate but do not oscillate. by how much does the internal energy of the gas increase

Answers

ΔEint = 46.42 J is the correct answer.

According to the Kinetic Molecular Theory of Gases,

Referring to equation , we have

ΔEint=nCVΔT= 5/2nRΔT

Q=nCPΔT = 7/2nRΔT

Dividing the equations, we obtain

ΔEint/Q = 5/7

Thus, the given value Q=65 J leads to ΔEint = 46.42 J

What is Kinetic Theory?

1) Gases are made up of a lot of tiny particles spaced far away from one another.

2) The gas molecules clash elastically with the container wall as well as with one another.

3) Gas molecules have kinetic energy and are constantly moving randomly.

4) The attraction between gas molecules is extremely weak and is regarded as negligible.

5) The average kinetic energy of gas molecules is precisely proportional to the temperature of the gas.

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Why do tariffs lower foreign prices?

Answers

The tariff will Reduce imports into the domestic country, and since its imports represent a sizeable proportion of the world market, world demand for the product will fall.

What are tariffs?

A tariff is a type of tax that a country imposes on imported goods at its borders. Tariffs have historically been a tool for governments to generate revenue, but they are also a way governments seek to protect domestic producers.

As a protectionist measure, tariffs increase the price of imported goods. As a result, consumers choose to buy relatively cheap domestic products instead.

In today's global economy, many products that consumers buy contain components from other countries or are assembled abroad. As a result, tariffs can also hit consumers of products they believe are made in their own country.

The tariff will Reduce imports into the domestic country, and since its imports represent a sizeable proportion of the world market, world demand for the product will fall.

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a modern state-of-the-art biomass power plant with heat recovery feature has the capacity to combust up to 1.4 x 106 kg/day of pellets to generate energy. the pellets have an average lhv of 18.1 mj/kg and hhv of 19.1 mj/kg. with a capacity factor of 57% and conversion efficiency of 38%, how much energy does this plant generate on an annual basis?

Answers

Energy in terms of Joules = 1956.50 GJ is the answer.

Energy generation by the Power plant (on annual basis) is given as: -

A.  When heat recovery feature is Present

E = (M * HHV * C * ηc * 365) / 3600 watt – hr         ------------- equation (i)

B.  When heat recovery feature is not present

E = (M * LHV * C * ηc * 365) / 3600 watt – hr        ------------- equation (ii)

Here,

 M = Mass of Pellets consumed per day (Kg/day)

 HHV = Higher Heating Value of Biomass (J/Kg)

 LHV = Lower Heating Value of Biomass (J/Kg)

 C = Capacity factor {Plant running this % time in a day}

 ηc = Conversion efficiency

 Joule to watt – hr conversion factor

 1 Joule = 1 /3600 watt – hr

Given:

 M = 1.3 * 106 Kg/day;

 HHV = 19.9 * 106 J/Kg;

 LHV = 17.4 * 106 J/Kg

 C = 56% = 0.56

 ηc = 37% = 0.37

Heating Recovery feature ---> Present

As heating recovery feature is present so eq. 1 will be used

Now, putting corresponding given values in Eq. 1 to get the value of E.

E = (M * HHV * C * ηc * 365) / 3600

E = (1.3 * 106 * 19.9 * 106 * 0.56 * 0.37 * 365) / 3600

E = (1956.496 * 1012) / 3600

E = 543.47 Gwh

Energy in terms of Joules = 543.47 * 3600

Energy in terms of Joules = 1956.50 GJ

Energy Generation (E) by the power plant (on annual basis) = 543.47 Gwh (Giga Watt – hour)

Energy Generation (E) by the power plant (on annual basis) = 1956.50 GJ (Giga Joule)

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Vector A⃗ has magnitude 8.00 m and is in the xy-plane at an angle of 127° counterclockwise from the +x–axis (37˚ past the +y-axis). What are the magnitude and direction of vector B⃗ if the sum A⃗+B⃗ is in the −y-direction and has magnitude 12.0 m? Show bothvectors’ components in the xy-plane.

Answers

293.7 degrees in a clockwise motion from the plus x-axis.

A=8 sin(37)i - 8 cos(37)j

A + B = -12 j

B = an I + b j, where and are constants that need to be determined.

A and B are equal to (a - 8 sin (37))i and (8cos(37) + b). j - 12 j = (8cos(37) + b) + (a - 8 sin (37)) I

Coefficients of I and j are compared.

B = 4.81452 I - 18.38908 j, or the fourth quadrant, from the equations a = 8 sin (37) = 4.81452 m and b = -12 - 8cos(37) = -18.38908.

In light of this, cos (Q) = 4.81452 / 12 Q = 66.346 degrees.

From the plus x-axis in the CCW direction, 360 - Q = 293.65 degrees.

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which has more energy, light with a wavelength of 580 nm or light with a wavelength of 660 nm?

Answers

There is more energy with the light of wavelength 580 nm compared to 660nm as energy is inversely related to wavelength.

The energy of a radiation type is inversely proportional to its wavelength. This means energy increases with decreases in wavelength, and energy decreases with increases in wavelength. The relation between energy, wavelength, and frequency is shown by the equation E = hν = hc/λ.

where

E = energy,

h = Planck's constant,

ν = frequency,

c = the speed of light,

and λ = wavelength of the wave

Wavelength is defined as the distance measured between two adjacent crests or two adjacent troughs of a wave cycle.

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When a light of wavelength 400nm falls on the metal of work function 2.5 eV What will be the maximum magnitude of linear momentum of emitted photoelectron?

Answers

The maximum magnitude of linear momentum of emitted photoelectron is 4.12 1025 kg/s.

The photoelectron spectrum is created by analyzing the spectrum of energies that are present in the electrons produced when an intense photon of radiation strikes a molecule. These electrons are referred to as photoelectrons.

The incident photon's energy is given by

E = 1240 / λ ev,

= 1240 / 400,

= 3.1 eV.

W = 2.5 eV is the work function.

Therefore, the electron's maximal energy will be given by

KE = E-W

= 3.1 eV - 2.5 eV

= 0.6 eV = 0.6 1.6 10⁻¹⁹ Joule.

The greatest possible linear momentum is given by p = √2m.

KE is equal to √(2 9.1 1031 kg 0.96 10⁻¹⁹) joules = 4.12 1025 kg/s.

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FILL IN THE BLANK. A set of points in the xy-plane is the graph of a function if and only if every ______ line intersects the graph in at most one point.

Answers

"A set of points in the xy - plane is the graph of a function if and only if every vertical line intersects the graph in at most one point."

A line that is perpendicular to the surface is the vertical line. In coordinate geometry, the vertical lines are frequently parallel to the y-axis, perpendicular to the horizontal lines, and vice versa. A vertical line is any straight line that passes from top to bottom or from bottom to top.

The vertical lines are sometimes known as standing lines. Normally, we connect the bases of a square or a rectangle using vertical lines. In our daily lives, we encounter vertical lines in the form of fence bars made of steel, tall trees that stand straight up, table legs, etc. Let's explore it further with a few concrete instances.

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What is the order and degree of differential equation Mcq?

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The order of a differential equation is the order of the highest derivative appearing in it.

The degree of a differential equation is the power of the highest derivative occurring in it, after the Equation has been expressed in a form free from radicals as far as the derivatives are concerned.

What is a differential equation?

A differential equation is one that contains derivatives that are either partial derivatives or ordinary derivatives. The derivative represents the rate of change, and the differential equation describes the relationship between a quantity that is constantly changing with respect to a change in another quantity. There are many differential equation formulas to find solutions to derivatives.

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a mass-less spring of length 31 cm is laid out on a table, with the left side firmly attached to a support, and a mass of 1 kg attached to the right end. the value of the spring constant is 164 n/m. the mass is pulled by a distance 6 cm to the right, and released. the table is friction-less, and the spring-mass executes simple harmonic motion. how many complete vibrations will the mass undergo in a time 60 s. round your answer to the nearest whole number

Answers

The number of vibrations are 122

as per the question given,

the length of the mass less string (l) is 31cm

a mass attached to the right end of spring (m) is 1kg

the value of the spring constant is (k) is 164 n/m

the mass is pulled by a distance (d) is 3cm

time (t) is 60s

the time period of the mass-less spring  system is

[tex]T=2\pi \sqrt{\frac{m}{k} }[/tex]             ----(1)

where

the value of (m) is 1kg

the value of spring constant (k) is 164 n/m

let the value of [tex]\pi[/tex] is 3.14

now substitute the values in the time period equation

[tex]T=2\pi \sqrt{\frac{1}{164} }[/tex]

=> [tex]T= 2\times (3.14) \sqrt{\frac{1}{164} }[/tex]

=> T = [tex]2\times (3.14) \times 0.07803[/tex]

=> T =0.49002

the time period T is 0.49002,

therefore the number of oscillations in 60s is

n = time/Time period

[tex]n=\frac{60}{T}[/tex]

=>n =  [tex]\frac{60}{0.49002}[/tex]

=> n= 122.43

=> n = 122

the number of vibrations are 122    

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consider the drawings of charges and electric field lines shown.

Answers

From the given diagrams, we can tell options b, c, d, f, and g are the correct options. Because they are an incorrect depiction of the electric field line.

In a certain area of space, electric field lines provide details on the direction (and intensity) of an electric field. At a particular position, a field line is drawn perpendicular to the net. Therefore, the tangent to the electric field line at any place coincides with the direction of the electric field there.

To ascertain the electric field of a point charge, apply Coulomb's law. From the point charge, the electric field radiates in all directions. Always pointing away from positive charges and toward negative charges are electric field lines. In actuality, positive charges initiate electric fields, which terminate at negative charges. Field lines never cross each other, as well. If they do, it indicates that there are two directions to the electric field there.

Here, options a and e are correct depictions of field lines for a point charge.  

in option b, the field line extends from the negative charge rather than the positive chargein option c, most of the field line emerges on the right side than the left sidein option d, the line reaches the positive charge instead of the negative chargein option f, the lines are intersectingin option g, the line forms a loop

The complete question is -

Consider the drawings of charges and electric field lines shown. Which of the electric field line drawings are incorrect for point charges?

a), b), c), d), e), f), g)

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1. What is the formula for Acceleration?

Answers

Answer:

The formula of acceleration (a) = velocity (v)- initial velocity (u) /time taken(t)

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