Please write an explanation of the collapsing can experiment. Make sure you draw a diagram and include what is happening with the gas pressure.


(Don't draw it just someone might have the same question).

causes other electric charges in the electric field to move. When a charge is placed in an electric field, the field will either pull or push the charge.

A charge moves, transferring energy that can be put to use for work. The force of attraction or repulsion between charged particles is what moves a charge because it is the same force that builds up a charge in the first place.

An electric field pushes the charges forward. We require an electric potential (voltage) source to force electrons from a point of low potential energy to one of higher potential energy.

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The Volume of gold with the given mass and density would be 1.03 X 10^-5 m^3.

Density of material  = [tex]2.5 * 10^{-27}[/tex] Kg/m^3

Density of gold = 19300 kg/m^3

Volume of material = [tex]8 * 10^{24}[/tex] m^3

mass of material = [tex]2.5 * 10^{-27}[/tex] X [tex]8 * 10^{24}[/tex] Kg

                     = [tex]2 * 10^{-2}[/tex] Kg

Since we know that mass of gold sample is same as mass of material

mass of gold = [tex]2 * 10^{-2}[/tex] Kg

Volume Of Gold = Mass / Density of gold

                           = (2 * 10^-2) / (19300)   m^3

             answer = 1.03 X 10^-5  m^3

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Answer: 35m/s

Explanation: answer from castle learning

A projectile is launched horizontally from a height of 65 meters with an initial horizontal speed of 35 meters pre second. projectile's horizontal speed after it has fallen 25 meters is 35 m/s.

Speed is measured as the ratio of distance to the time in which the distance was covered. Speed is a scalar quantity as it has only direction and no magnitude.

The formula of speed is represented as s=d/t, Where, s is the speed in m.s-1, d is the distance traveled in m, t is the time taken in s

There are four types of speed such as Uniform speed, Variable speed, Average speed, Instantaneous speed

Uniform speed is an uniform speed when the object covers equal distance at equal time intervals, variable speed is defined as when the object covers a different distance at equal intervals of times.

Average speed is defined as the uniform speed the ratio of total distance travelled by an object to the total time taken by the object.

Instantaneous speed is defined as an object is moving with variable speed, then the speed at any instant of time is known as instantaneous speed.

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The force required to keep the box moving at a constant speed is 45.4 N

Friction is the force that resists relative motion as elements of solid surfaces, fluid layers, and materials slide over each other. A type of contact force that exists between contact surfaces.

We know that;

Fₙ = m × a

Where, Fₙ = Net force

m = mass of the object (11.3 kg)

a = acceleration

Since the box is moving with a constant speed which means there is no acceleration.

Fₙ = 11.3 × 0

Fₙ = 0

Now,

Fₓ = μmg

Where, Fₓ = Friction force

μ = coefficient of kinetic friction (0.41)

m = mass of the box (11.3 kg)

g = gravitational acceleration (9.8m/s²)

Fₓ = 0.41 × 11.3 × 9.8

Fₓ = 45.4 N

We know that,

Fₙ = Fₐ - Fₓ

Where, Fₙ = Net force

Fₐ = Applied force

Fₓ = Friction force

Since Fₙ = 0, then:

0 =  Fₐ - 45.4

Fₐ = 45.4 N

Therefore, if the kinetic friction force is equal to the applied force, the acceleration will be zero and the body will move with constant velocity.

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Answer:

Explanation:

Given:

M = 6,40·10²³ kg

R = 8.01·10⁵ km = 8.01·10⁸ m

G = 6.67·10⁻¹¹ N·m²/kg²

____________________

T - ?

Orbital speed:

V = √ ( G·M / R) = √ (6.67·10⁻¹¹·6,40·10²³ / 8.01·10⁸) ≈ 220 m/s

Orbit length:

D = 2·π·R = 2·3.14·8,01·10⁸ = 5·10⁹ m

Period:

T = D / V = 5·10⁹ / 220 ≈ 23·10⁶ s = 266 days

The main difference between vulnerability scanning and penetration testing is the automation.

A vulnerability scan is an automated, high-level test which looks for potential vulnerabilities and reports those vulnerabilities. A vulnerability scan is also known as vulnerability assessment. It assesses computers, systems and networks for security weaknesses.

A penetration test is done by a real person rather an automated machine. It is a detailed hands on examination that tries to detect and exploit weaknesses in your system. A penetration test simulates a hacker's attempt to get into a business system through research and the exploitation of vulnerabilities.

Therefore, the main difference between vulnerability scanning and penetration testing is the automation.

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MAIN ANSWER- [tex]5/\sqrt{21} sec[/tex]

supporting answer-When a body is moving, it experiences resistance because it interacts with its surroundings. This resistance is a friction force. Friction opposes relative motion between systems in contact but also allows us to move, a concept that becomes obvious if you try to walk on ice. Friction is a common yet complex force, and its behavior still not completely understood. Still, it is possible to understand the circumstances in which it behaves.

body of the answer- a block of mass m with 10kgs is sliding on a inclined plane with frictionless surface

final answer- [tex]5/\sqrt{21} sec[/tex]

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The reaction time of the student is approximately 0.2 s (Option B)

Considering the question given above, the following formula can be use to obtain the time

h = ½gt²

Where

Now, let us calculate the reaction time of the student. This is shown below:

h = ½gt²

0.20 = ½ × 9.8 × t²

0.20 = 4.9 × t²

Divide both side by 4.9

t² = 0.20 / 4.9

Take the square root of both side

t = √(0.20 / 4.9)

t = 0.2 s

Thus, the reaction time is 0.2 s (Option B)

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The work energy of speed is

1304.2 .

What is work energy ?

work energy is the most fundamental quantity of physics . Work is said to be done when a force applied to an object cause a displacement of a object.

Solution -

As per the given-

Mass of runner m = 74kg

Initial velocity of runner u=4.8 m/s

Final velocity of runner v =0

Coefficient of friction ¥=0.7

Let's d be the distance moved by runner till the stop.

a- mechanical energy lost due to friction

As friction does negetive work causing the runner to stop.

As we know,

Mechanical energy lost= Kinetic energy of runner

Mechanical energy lost =

1/2 mv^2 = 1/2 ×74×4.8^2=852.2

Distance move by runner-

Work done by friction = mechanical energy lost

-¥×mg×d =852.2 j

-0.7×74×9.8×d = -491.2

Solving the equation we get

1304.2.

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When the air is compressed to half its volume the density gets doubled.

Density refers to mass of matter per unit volume. The most common symbol for density is ρ. Density provides a convenient means of obtaining the mass of an object from its volume and vice versa. A change in the mass or volume of an object can change the density of the object. So, when volume increases density decreases simultaneously.

Since, Density = Mass/ Volume

If the volume is compressed to half i.e. V/2 then,

ρ = M/(v/2)

ρ = 2M/V

Hence, density gets twice it's original value when we lower the volume to half.

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Using energy considerations Since Ef=Ei, a rock thrown from the tip of a bridge doesn't matter which direction it is thrown in.

Given that,

Height of the bridge is 20m

Initial before he throws the rock

The height is hi = 20 m

Then, final height hitting the water

hf = 0 m

Initial speed the rock is throw

Vi = 15m/s

The speed at final is at which the rock hits the water

Vf = 24.8 m/s

Using given energy conservation

Ki + Ui = Kf + Uf

Where

Ki is initial kinetic energy

Ui is initial potential energy

Kf is final kinetic energy

Uf is final potential energy

Then,

Ki + Ui = Kf + Uf

Where

Ei = Ki + Ui

Where Ei is initial energy

E i =1/2mVi² +m*g*hi

E i =1/2m × 15² + m *9.8*20

E i = 112.5m + 196m

E i = 308.5m J

Now,

E f = Kf + Uf

E f =1/2mVf² + m*g*hf

E f =1/2m*24.8² + m*9.8* 0

E f = 307.52m + 0

E f = 307.52m J

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The factor by which the density is increased F = 2.86.

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When we cover the top part of the lens, the image becomes dimmer. So we lose about half of the light from all areas of the object when we block half of the lens.

The camera is used to capture images, events, and so on. It is photographic and consists of a lens system convex lens and photographic film encased in a black box to make it light proof. The camera's operating mechanism is similar to the eye's, but the camera can also make tangible images.

The image becomes dimmer when we cover the top of the lens. This means that light from all areas of the object passes through all of the lens and then creates the image, so when we block half of the lens, we lose about half of the light from all areas of the object.

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I = 3.0A

What is current?

A stream of charged particles, such as electrons or ions, traveling through an electrical conductor or a vacuum is known as an electric current. The net rate of electric charge flowing through a surface or into a control volume is how it is calculated.

For a current-carrying wire running perpendicular to a magnetic field, the magnetic force acting on the wire is given by:

F = ILB

F = magnetic force, I = current, L = wire length, B = magnetic field strength

Given values:

F = 0.60N, L = 1.0m, B = 0.20T

Plug in and solve for I:

0.60 = I(1.0)(0.20)

I = 3.0A

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Formulas for the balancing of forces

Examine the force diagram in the graph that is attached:

∑Fx=0

T1sen - T2cos = 0 Equation

∑Fy=0

T1cos ∝ + T2sin ∝ - W = 0. Equation(2)

forces in the x and y directions,

Horizontal movement

T1*CosA=T2*Cos(90-A)

Vertical Movement

m*g = T1*SinA + T2*Sin(90-A) (2)

We also know that T1=1.91 and T2 (3)

Thus, the final equations are

T1*CosA=T2*Cos(90-A)

A=62.365235 degrees using (2) and substituting a value for (3)

460*9.8 = 1.91*T2 *Sin(62.365235) + T2 *Cos(62.365235)

T2 = 4508 / (2.1559) = 2090.96 N

T1 = 1.91*T2 = 3993.737 N

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The gravitational acceleration at 6400 m is 9.74 m/s² and at 6400 km is 2.43 m/s².

We need to know about the gravitational field to solve this problem. The gravitational field is the area where affected by gravitational force. The magnitude of the gravitational field can be calculated by this equation

g = G . m / (R+r)²

where g is the gravitational field, G is gravitational constant (6.67 x 10¯¹¹ Nm²/kg²), m is the mass of the planet and r is the radius of the planet

From the question above, we know that

m = 5.94 x 10²⁴ kg

R = 6371000 m

ra = 6400 m

rb = 6400000 m

Find the gravitational acceleration at 6400 m

g = G . m / (R + r)²

g = 6.67 x 10¯¹¹ . 5.94 x 10²⁴ / (6371000 + 6400)²

g = 9.74 m/s²

Find the gravitational acceleration at 6400 km

g = G . m / (R + r)²

g = 6.67 x 10¯¹¹ . 5.94 x 10²⁴ / (6371000 + 6400000)²

g = 2.43 m/s²

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The velocity of the car is 46.48 m/s.

What is velocity?

velocity is directional speed of a object in motion as an induction of it's rate of change in position observed from a particular frame of reference and as measured by a particular standard of time.

Sol- The linear momentum of a body is defined as the product of its mass and its velocity, given by-

P = mv

According to the question the momentum of the truck is-

Pr=2250×25 kgm /s

Pr=56250 kgm/s

Now we can see the momentum of the car and the truck must be same that is Pc=Pr

1210×v =56250 kgm/s

v= 56250/1210

v= 46.48 m/s

Thus the velocity of the car is 46.48m/s .

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The magnetic field lines will combine when the magnet is closer to the the cathode ray tube, bending the beam of electrons as a result. The magnet pole orientation on either side of the cathode ray tube determines which way it bends.

what is magnrtic field lines?

Magnetic field lines are the lines that make up a magnetic field; their tangents at different points indicate the direction and amplitude of the field, respectively. The number of magnetic field lines affects how strong the magnetic field is.

B and H are used to denote the magnetic field. The SI units for B and H are Newtons per metre per ampere or Teslas, respectively.

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The magnetic field lines will combine when the magnet is closer to the the cathode ray tube, bending the beam of electrons as a result. The magnet pole orientation on either side of the cathode ray tube determines which way it bends.

What is magnrtic field lines?

Magnetic field lines are the lines that make up a magnetic field; their tangents at different points indicate the direction and amplitude of the field, respectively. The number of magnetic field lines affects how strong the magnetic field is.

B and H are used to denote the magnetic field. The SI units for B and H are Newtons per metre per ampere or Teslas, respectively.

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Density of liquids and gases.

Data:

d = ?

m = 40.0 g

v = 80.0 cm³

The formula for the density of liquids and gases

                d = m/v

Since it asks us to calculate the density, it is not necessary to clear the formula. We just substitute data and solve.

                d = 40.0 g/80.0 cm³

                d = 0.5 g/cm³

The leaves of a negatively charged electroscope will move apart if a positively charged rod is brought close to the top of the electroscope, but not touching it.

What is an electroscope?

An early scientific tool used to find an electrical charge on a body is called an electroscope. The movement of a test object caused by the Coulomb electrostatic force is used to detect charge. An object's charge is inversely proportional to its voltage.

part a) leaves will repel. leaves will move further apart.

part b)  all the negative moves to the top to get closer to the positive leaves go back together as an excess negative move to the top.  leaves separate less.

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Since water vapor makes up 1% of the air mass while that there are 1,000 mb of total pressure, the water evaporation rate would be 35 mb.

By applying a scalpel to a slice of fruit, one can observe a basic pressure. The surface won't be cut if you press the flat section of the sword against the fruit. The force is dispersed over a broad region.

Absolute, gauge, & differential pressure measurements are the three types. While gauge and difference pressures are reference to another pressure, such as the outside air pressure or the pressure in a nearby vessel, absolute pressure is defined as the maximum stress in a vacuum.

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The isotope that is best for the preservation of food is technetium.

We know that a radioactive isotope is one that does decay after some time. This implies that the radioactive isotope would undergo the process of spontaneous disintegration and gradually disappears as it is converted to the daughter nucleus which may not be radioactive.

In this case, we know that what is being irradiated is food hence we have to look at the various options of the isotopes that we have and then look at the one that has the shortest half life.

The reason why we must go this way is that the isotope that has the shortest half life is more likely to be completely decayed in a short time before the food is consumed thereby posing no threat to the consumer.

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The uncertainty momentum of the electron is 5.28×10-24 kg.m/s     and the kinetic energy is 95.5eV   .

What do you understand by Heisenberg uncertainty principle?

Heisenberg uncertainty principle states that it is very difficult or impossible to measure the exact position as well as the momentum of a given object. This is mainly based on the wave particle duality of matter. This principle holds a significant value in the quantum world. This principle is for those particles which holds both particle as well as wave nature.

a) Heisenberg uncertainty principle :

ΔxΔp≥h/4π

where x = uncertainty position

p= momentum

h = planck's constant (6.63×10-34)

uncertainty in momentum = Δp

Δp= h/Δx4π

Given, Δx = 0.1 nm = 1.0 ×10-11 m

⇒6.63×10 -34/4π×1.0 ×10-11 m

⇒5.28×10-24 kg m/s

b) Δp = mΔv

m = mass of electron=9.11×10-31 kg

Δv= Δp/m

⇒5.28×10-24/9.11×10-31 kg

⇒5.79×10 6 m/s

Kinetic energy = 1/2 mv²

⇒1/2(9.11×10-31 kg)(5.79×10 6 m/s)²

⇒1.53×10 -17 J/ 1.6×10 -19 ×1 eV

⇒95.5eV

c) Yes, it gives a reasonable value for the kinetic energy of an electron in an atom.

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Energy released by the electron transport chain is used to pump h+ ions into the mitochondrial inner membrane space.

Describe the process of electron transport?

The electron transport networks employed in photosynthesis are similar to the pathways for ATP generation in stage 3 of aerobic respiration. Energy-carrying electrons cascade from one to another in both electron transport chains, losing a small amount of energy along the way because energy carrier molecules are arranged in a specific order within a membrane.

The electron transport chain, often known as the "respiratory chain," is embedded in the inner membrane of the mitochondria during aerobic respiration. The FADH2 and NADH molecules generated during glycolysis and the Krebs Cycle provide high-energy electrons to energy carrier molecules inside the membrane. In order to pump hydrogen ions into the mitochondrial intermembrane gap and produce an electrochemical gradient, they lose energy as they go from one carrier to another.

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Water is referred to as a secondary refrigerant when it is cooled and circulated all through the building to higher ventilation coils.

With the help of secondary refrigerants, the quantity of primary refrigerants that are bad for the environment can be kept to a minimum and contained. In contrast to conventional refrigerants like HCFCs, secondary refrigerants, such as water, air, hydrocarbons, ammonia, and carbon dioxide, are less harmful to the environment.

The benefits of using refrigerants for industrial cooling include having a low primary refrigerant charge, preserve and enhance by limiting the use of the primary refrigerant to the engine compartment, a secondary pipe system that may occasionally be smaller, and the ability to use alternative insulations.

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The spring force comes out to be 220k/m and when the 3kg block is tied the extension in spring is 13.67cm.

Solution is attached.

What is Force-

According to physics. A force can cause an object with mass to accelerate when it changes its velocity, for as when it moves away from rest. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction. It is calculated using the newton SI unit (N). Force is denoted by the letter F. (formerly P).

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The primary surprise regarding the first planet found orbiting another regular star was the fact that its orbit took only 4 days to complete.

Astronomy has long employed the method, also known as the radial velocity method. The same telescope that astronomers used to find this planet was also used to find the first planet ever discovered around a sun-like star using radial velocity.

Finding exoplanets can be done using the Doppler method. The motion and characteristics of the star and planet are examined using the Doppler effect. The planet and the star are revolving around the same mass.

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Since the water level is higher in the tall, thin glass than it is in the shorter glass, there is more water in it.

Water is a liquid that possesses a variety of anomalies in its specific volume, as well as unusually high melting and boiling temperatures, a significant heat capacity, one of the highest dielectric constants among non-metallic liquids, and a number of other anomalies. Water is also a very effective solvent because it can dissolve a wide variety of substances. Water is widely accessible in all three states due to its low freezing and boiling points deu to temperature. Water, a substance that exists in the gaseous, liquid, and solid states and is made up of the chemical elements hydrogen and oxygen, has a very high specific heat. It is among the most common and necessary compounds. At room temperature, it is an odorless, tasteless liquid with the significant property of dissolving many other substances.

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Under development at MIT, photonic crystals allow solar panels to be twice as efficient by absorbing and converting the sun’s Heat.

A periodic change in the refractive index characterizes an optical nanostructure known as a photonic crystal. Similar to how the shape of natural crystals causes X-ray diffraction and how semiconductors' atomic lattices (crystal structure) affect their conductivity of electrons, this has an impact on how light travels. In nature, photonic crystals take the shape of structural colouring and animal reflectors, and when created artificially, they hold promise for a variety of uses.

It is possible to create photonic crystals in one, two, or three dimensions. Thin film layers that are placed on top of one another can form one-dimensional photonic crystals. For two-dimensional ones, photolithography or drilling holes in an appropriate substrate can be used.

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The kinetic energy increases by the square of the same factor as the speed increase.

Kinetic energy only changes when speed changes. Speed is only related to the size of an object. Kinetic energy increases as speed increases. All moving objects have the same kinetic energy.

The equation for Kinetic Energy is:-   KE = 1/2 mv².

Kinetic energy has a direct relationship with mass, meaning that as mass increases so does the Kinetic Energy of an object. The same is true of velocity.

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