consider the earth spinning from west to east on its axis. it is slowing down in its rotation due to friction with the air. using the right hand rule, in what direction is the frictional torque?

Answer:

506.68 meters

Explanation:

When you launch a projectile at an angle θ from the horizontal, the initial velocity of the projectile will have a vertical and a horizontal component.

In order to determine the maximum height reached by the projectile during its flight, we need to use the vertical component of its motion.

We can use the equation below to find the maximum height.

[tex]h_{max} =\frac{v_o^{2}sin^2(B) }{2g}[/tex]

We are given

[tex]v_o=200[/tex]

[tex]B=30[/tex]

[tex]g=9.81[/tex]

Lets evaluate [tex]h_{max}[/tex].

[tex]h_{max} =\frac{200^{2}sin^2(30) }{2*9.81}[/tex]

[tex]h_{max} =\frac{40000^{2}sin^2(30) }{2*9.81}[/tex]

[tex]h_{max} =\frac{40000(\frac{1}{2})^2 }{2*9.81}[/tex]

[tex]h_{max} =\frac{40000(\frac{1}{4}) }{2*9.81}[/tex]

[tex]h_{max} =\frac{10000}{2*9.81}[/tex]

[tex]h_{max} =\frac{10000}{19.62}[/tex]

[tex]h_{max} =509.68[/tex]

The total length of the copper wire is 28.008 m.

Calculate the angular frequency:

ω = 2 π f

ω = 2 × 3.14 × (60.0 Hz)

ω = 376.991 rad/s

Calculate the peak voltage:

V₀ = √2 × Vrms

V₀ = √2 × 120 V

V₀ = 169.706 V

The expression for the peak voltage and substitute the corresponding values to calculate the area of the square coil.

V₀ = NBAω

169.706 V = ( 60 ) × ( 0.55 T ) × ( A ) × ( 376.991 rad/s )

A = 0.01364 m²

The expression for the area of the square coil and substitute the corresponding values to calculate the side of the square:

A = L²

∴ L² = 0.01364 m²

∴ L = 0.1167 m

The total length of the wire to make the coil:

L(total) = (4N)L

L(total) = 4 × 60 × 0.1167

L(total) = 28.008 m

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As velocity is a vector quantity that depends on the direction of the automobile, a car traveling on a roundabout can have a constant speed but can also have fluctuating velocity because its direction will be changing frequently.

There might be a change in velocity's magnitude (speed), direction, or both. Even if the speed may be constant in uniform circular motion, there is always an accompanying acceleration since the direction of the velocity changes continuously.

Because acceleration is a change in velocity, an object that is temporarily at rest yet has some speed a split second later can still be altering velocity.

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The light bends towards the normal line  

If light enters any substance with a advanced refractive  indicator  similar as from air into glass it slows down.

 When a  ray of light passes from a  lower  thick material such as air into a  thick material  such as glass or water it's bent down from the  face between the two accoutrements . This means that in this situation the angle of refraction will always  be lower than the angle of incidence.

The angle of refraction is  lower than the angle of incidence.  This occurs anytime you have 2 materials with different  indicators of refraction. As light passes from air it'll  decelerate down, which bends the light toward the normal.

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Answer:

March 15, 1641

Cardinal Maffeo Barberini,

I long awaited for my words to reach you. I sit here in my study, writing to you from Pisa. First I must ask how you are, how everything is. I know that from when you were elected that you would prosper in your studies and long live your prophecy as a Pope. Abiding by the advice you once told me, I hav e continued to further my understanding of the Solar System. From extensive measures of studying I have come to a theory and new model which I will represent as the Heliocentric Model. When considering the sun as the center, the rest around falls into place perfectly, surrounded around a fixed sun. Over the years I have found that much like our moon, Venus goes through phases. However, with this behavior it could only be true that Venus travels around the sun, rather than our beloved Earth. As a Pope I expect at least some defiance, but I respect you always as my good friend. I have taken ideas conveyed by Nicolaus Copernicus published in 1543, although I have learned he has formulated these conclusions much earlier in 1510. Currently many believe our Earth to be the center, the one in which all orbit around which differs from my sun-centered philosophy. Most are indifferent to my theories for now, however I believe this to be considered further and become the basis model of our Solar System.

-Galileo  

The eardrum vibrates in response to incoming sound waves, and three small bones in the middle ear receive these vibrations. The names of these bones are malleus, incus, and stapes.

A wave is an energetic disturbance that travels from one location to another. When ever a wave propagates, simply energy, no matter, is changed. The medium is that material through which a wave travels. That medium repeatedly oscillates back and forth.

A wave is a disturbance or variation that gradually transfers energy from one place to another in a medium. It might be in the form of an elastic deformation or a change in pressure, electric or magnetic strength, electric potential, or temperature.

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The time period of the piston is b. 30ms

To calculate Time period we have,

T=[tex]\frac{t}{N}[/tex]

Where,

T is time period,

t is time taken by piston,

N is number of cycles.

We are given that

t= 1 min = 60 sec

N= 2000

T=[tex]\frac{t}{N}[/tex]

T =[tex]\frac{60}{2000}[/tex]

T = 0.03  s

T = 30 × [tex]10^{-3}[/tex]

T = 30 ms.

Therefore the time period taken by the piston = 30 ms.

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The time the football takes to complete its flight path is 1.04 sec.

Velocity is the directional pace of an item in motion as an indication of its rate of exchange in the role as determined from a selected frame of reference and as measured by way of a selected standard of time.

Average velocity is calculated by means of dividing your displacement (a vector pointing out of your initial role in your final position) through the entire time; the average pace is calculated by way of dividing the overall distance you traveled by means of the total time.

Calculation:-

Time of flight depends on the y direction

V in y direction is = 6.9 m/s

V² = U² - 2gh

h = u²/2g

   = 47.61 /2 * 9.8

   = 2.43 m

Time of flight = 2U/g

                       = 2 * 6.9 / 9.8

                       = 1.4 second.

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Campaigning for perplexing that one of the world's largest fast food chains is still trailing behind, with no vegetarian or vegan burgers.

What is campaign ?
A campaign is any series of actions or events designed to achieve a specific result, such as a television commercial and Internet ad campaign attempting to persuade children to buy bubble gum-flavored toothpaste.

The noun campaign refers to any group of actions carried out with a specific goal in mind. A political campaign's purpose is to elect a candidate to office. A military campaign's purpose may be to gain control of a city, as in General Sherman's Civil War campaign to conquer Atlanta. Campaign may also be used as a verb, such as when an environmental organisation asks people to sign petitions and contact their representatives in Congress to prevent a developer from establishing a shopping mall.

In recent years, the terrible impact of animal husbandry has taken centre stage, and we're becoming more aware of the impact our meat consumption has on the environment, our health, and animals. Which makes it even more perplexing that one of the world's largest fast food chains is still trailing behind, with no vegetarian or vegan burgers.

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The energy difference of the given reaction is -8686.63 kJ/mol

The reaction is an exothermic reaction.

The energy difference of a reaction is the difference between the sum of the energy of the products and the sum of the energy of the reactants.

The energy difference of a reaction is also called the enthalpy change of a reaction.

The enthalpy of a reaction is the sum of the energy changes that occur in a reaction.

When the sum of the energy changes that occur in a reaction is positive, the reaction is endothermic. However, when the sum of the energy changes that occur in a reaction is negative, the reaction is exothermic.

The energy difference of the given reaction is determined as follows;

The energy of products = -6363.85 kJ/mol + (-2176.38 kJ/mol)

The energy of products =  -8540.23 kJ/mol

The energy of reactants = 146.4 kJ/mol + 0 kJ/mol

The energy of reactants = 146.4 kJ/mol

The energy difference = -8540.23 kJ/mol - 146.4 kJ/mol

The energy difference = -8686.63 kJ/mol

The reaction is, therefore, an exothermic reaction.

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Yes, The bubbles in electrocuted water is considered as a new substance.

The water molecules' hydrogen and oxygen atoms are separating because of the electric current's flow, which is doing so. Bubbles of oxygen and hydrogen are consequently produced as a result.

When faulty wiring in a pool light, boat dock, or boat launch releases an electrical current into the water, electrifying the water, and a person, such as a swimmer, comes into contact with the electrified water, it causes electrocution in water, also known as an electric shock drowning.

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Answer:

There is direct evidence that the weak and electromagnetic forces were once unified as a single electroweak force from the study of subatomic particles.

Explanation:

The discovery of the W and Z bosons, which are particles that mediate the weak nuclear force, provided strong evidence that the weak force was once part of a larger electroweak force. The fact that the W and Z bosons have electric charge, and that their masses are related to the masses of the photon (the particle that mediates the electromagnetic force), supports the idea that the weak and electromagnetic forces were once part of a single electroweak force. Additionally, the mathematical symmetry of the electroweak theory, which unifies the weak and electromagnetic forces, provides further evidence for this theory.

The unknown frequency  is 253Hz or 259Hz

The beat frequency fbeat = f1 ± f2

Taking f1 = 256Hzand   f beat  = 3Hz

we get the unknown frequency   f2 = 253Hz or 259Hz

The frequency of an event is its repetitions per unit of time. [1] For clarification, it is sometimes referred to as temporal frequency and is separate from angular frequency. One event occurs every second, or one hertz (Hz), when measuring frequency. The period is the inverse of frequency since it measures the time elapsed between events.  For instance, the period, T the time interval at which the is half a second if a heart beats at a frequency of 120 beats per minute (2 hertz).

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The time period of pendulum on mars is 4.16 s.

A pendulum is a machine in which a point mass is hung from fixed support by an inextensible string. The length of the simple pendulum is the vertical distance between the point of suspension and the suspended body's centre of mass.

We know that, the time period of pendulum is inversely proportional to the square root of acceleration due to gravity.

T₁/ T₂ = √(g₂ / g₁)

Given that, T₁ = 2.5 s

g₂ / g₁ = 0.37

Placing the values in the above equation,

2.5/ T₂ = √ 0.37

2.5² = T₂² * 0.37

T₂² = 2.5² / 0.37

T₂² = 16.89

T₂ = 4.16 s

Thus, the time period of pendulum on mars is 4.16 s.

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The maximum height is 15.3m

The speed of the rock is -9.8m/s

Solution:

v(horizontal) = v0 cos 30 = 30

v0=30/cos30=34.6m/s

Therefore the initial vertical velocity is v0 sin30 =

34.6 sin30=17.3m/s

if the initial vertical speed is 17.3m/s, we can use

vfy^2=v0y^2+2ad

vfy = final y velocity=y vel at max height =0

v0y = initial y velocity = 17.3 m/s

a = accel = -9.8m/s/s

d = height

0 = 17.3^2-2(9.8)d

d = 17.3^2/19.6 = 15.3 m

Velocity is the distance traveled per unit of time, the speed of movement. The speed of a car traveling on a smooth, flat section of a highway without traffic congestion is constant and not zero. Acceleration is the rate of change of velocity. The reason is simple. Velocity is the percentage of time an object moves along a path and Velocity is the speed and direction of an object's movement.

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The gravitational force between them change is force will be one-ninth as great.

It is possible to think of the gravitational force as an attracting force that pulls all mass-containing physical objects together. It is the known natural force with the lowest strength. Gravitational force is the name for the force that the earth exerts on a body. As an illustration of motion caused by gravity, consider how leaves and fruits fall to the ground from trees, how water flows down rivers, or how a ball tossed into the air flies to a height before falling back to earth. The universal force of attraction operating on all matter is known as gravity, usually spelled gravitation, in mechanics. It plays no part in determining the interior properties of common stuff because it is by far the weakest force in nature that is known to exist.e.

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The acceleration is 3.2m/s².

According to the question,

An object with a mass of 10kg is sliding on a surface inclined at an angle θ=30° with the horizontal.

mass, m = 10kg

angle = 30°

the coefficient of kinetic friction between the horizontal surface and the object is (μ)= 0.2

let, acceleration = a m/[tex]s^{2}[/tex]

N=mgcos30°=mg[tex]\frac{\sqrt{3} }{2}[/tex]  ( cos30° = [tex]\frac{\sqrt{3} }{2}[/tex] )

The static friction force, fs=μN=μmg [tex]\frac{\sqrt{3} }2}[/tex]

We know that,

mgsinθ−fs=ma

⇒mgsin30°−μmg [tex]\frac{\sqrt{3} }{2}[/tex] =ma ( substitute the value)

⇒[tex]\frac{g}{2}[/tex]−μg[tex]\frac{\sqrt{3} }{2}[/tex] = a

⇒ [tex]5 - (5\sqrt{3} )(0.2) = a[/tex] ( substitute the value)

⇒a = 3.2 m/ [tex]s^{2}[/tex]

So, the acceleration is 3.2m/s².

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​

Since light travels at a finite speed, if we witness an object 13 billion light years distant, the light has been moving in our direction for 13 billion years. In essence, what we are witnessing is how that item looked 13 billion years ago.

The cosmos is 13.7 billion years old, but how can we know this?

Although scientists are unsure of the universe's actual age, we estimate that it is roughly 13 billion years old, give or take a few billion. Two methods are used by astronomers to determine the age of the universe: (a) searching for the earliest stars; and (b) measuring the universe's rate of expansion and extrapolating back to the Big Bang.

The age of the universe is 13.8 billion light-years?

When we look up at the sky, we can only make out light that originates from objects that are currently 46 billion light years away and is at most 13.8 billion years old. Anything farther is beyond the horizon, but every second we see fresh, older light emerging from a location that is just a little bit further away—exactly three light seconds farther.

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The emf induced in the loop is -6.30 x [tex]10^{-4}[/tex] Wb/s.

The emf induced in the loop is given by the equation:

ε = -N × (ΔΦ / Δt)

where ε is the emf induced in the loop, N is the number of turns in the loop, ΔΦ is the change in the magnetic flux through the loop, and Δt is the time over which the change in magnetic flux occurs.

In this case, the change in magnetic flux through the loop is given by the equation:

ΔΦ = B × ΔA

where B is the strength of the magnetic field and ΔA is the change in the area of the loop.

Plugging the values for B and ΔA into the equation gives us the following:

ΔΦ = 0.50 T × (-1.26 x [tex]10^{-3}[/tex] m²/s) = -6.30 x [tex]10^{-4}[/tex] Wb/s

To determine the emf induced in the loop, we need to know the number of turns in the loop and the time over which the change in magnetic flux occurs. Without this information, it is not possible to calculate the emf induced in the loop.

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The result of added filtration is an increase in x-ray quantity. Option C.

Additional filtration refers to filters that are used in addition to the original filtration. reinforced screen. An intensifying screen is used by him to intensify the X-ray effect when the X-ray film is illuminated. About 5% of the X-ray photons are absorbed only by the foil.

Additional Filtering Additional filtering consists of a thin aluminum plate placed in the path of the X-ray as it exits the tube housing on its way to the patient. You can add or remove them to change the quality of the X-ray beam. Filters provide the ability to attenuate low-energy X-ray photons allowing only high-energy photons to pass through and ultimately reach the image receptor.

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When AC consumes 12000 Btu of electricity and removes 24000 Btu of heat then it's coefficient of performance is 2 and heat rejected to outdoors is 24000 Btu.

The COP of a refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required. Higher COPs indicate higher efficiency, lower energy (power) consumption, and thus lower operating costs.

Given,

[tex]W_{supply}[/tex] = 12000 Btu

[tex]Q_{removed}[/tex] = 24000 Btu

Here, W- Electrical energy or work done on the Ac

[tex]Q_{removed}[/tex] = Total quantity of heat removed from house

The formula for the coefficient of performance of the Ac can be written as,

[tex]COP=\frac{Q_{removed}}{W}\\\\=\frac{24000}{12000}\\\\=2[/tex]

Hence, the coefficient of performance is 2.

The total heat rejected to the outdoor from the hose is,

[tex]Q_{rejected}=Q_{removed}[/tex] = 12000 Btu

Hence, the heat rejected to the outdoors is 24000 Btu.

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Answer:

18.5 kg

Explanation:

The mass M2 is approximately 18.5 kg.

To determine the mass M2, we need to use the given information to solve for the tensions T1 and T3, and then use these tensions and the horizontal tension of 39 N to calculate the mass of the weight on the right.

We can use the angles and the horizontal tension to calculate the vertical components of T1 and T3. The vertical component of T1 is given by T1 * sin 55°, and the vertical component of T3 is given by T3 * sin 44°.

We can use the principle of equilibrium to set the sum of the forces in the vertical direction equal to zero. In this case, the forces are the weight of the left weight W1, the vertical component of T1, the vertical component of T3, and the weight of the right weight M2 * g, where g is the acceleration of gravity (9.8 m/s^2).

We can write this as an equation: W1 + T1 * sin 55° + T3 * sin 44° - M2 * g = 0.

We know that the weight of the left weight is W1 = M1 * g, where M1 is the mass of the left weight. We also know that the horizontal tension is 39 N, and we can calculate the vertical components of T1 and T3 using the given angles and the horizontal tension. When we substitute these values into the equation above and solve for M2, we get:

M2 = (W1 + T1 * sin 55° + T3 * sin 44°) / g

= (M1 * g + 39 N * sin 55° + 39 N * sin 44°) / g

≈ 18.5 kg

Therefore, the mass M2 is approximately 18.5 kg.

The reading which shows the precision of a Vernier calipers reading to one tenth of a millimeter is 3.31cm. Thus, the correct option is B.

A vernier calipers is a measuring device which is used for the measurement of linear dimensions such as length. However, it is also used for the measurement of diameters of round objects through the help of the measuring jaws which are present in it.

Vernier calipers reading is the smallest measurable distance that can be captured by a Vernier caliper. It is termed as the resolution of the Vernier caliper. The resolution of metric Vernier calipers varies from 0.02mm to 0.05mm that is it reads to one tenth of a millimeter unit. Thus, 3.31cm is a precise reading.

Therefore, the correct option is B.

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Increasing the distance between objects reduces the attraction or repulsion between them.

When the distance between two charges is doubled, the attractive or repulsive force becomes weaker and drops to a quarter of its original value. If the charge is 10 times closer, the magnitude of the force will be 100 times greater. The magnitude of the force is proportional to the value of each charge.

Therefore, the strength of bonding between ions of opposite charge in an ionic compound depends on the charge of the ions and the distance between the centers of the ions as they are packed into the crystal. If the two charges held are unequal, the electrostatic force increases with distance.

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At  b Fx =0 of the labeled x-coordinates is the force on the marble zero.

As per the details share in the given figure,

Are as bellow,

At b x-coordinates is zero as,

A spherical or elliptical coordinate system known as the geographic coordinate system is used to measure and transmit positions on Earth as latitude and longitude. Of the many spatial reference systems in use, it is the most basic, traditional, and often utilized. It also serves as the foundation for the majority of other systems.

F = -dU/dx ,

Depending on whether F is lowest or maximal, v.

B is the regional minimum in the presented graph.

The slope of the provided curve's tangent at b is thus zero.

A line's slope, often known as its gradient, is a numerical representation of the line's elevation change and course.

so dv/dx =0

Therefore at b Fx =0

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Note:- The correct question would be as bellow,

A marble moves along the x-axis. The potential-energy function is shown in the figure below.

(a) At which of the labeled x-coordinates is the force on the marble zero?

abcd

Cesium-134, cesium-137, and iodine-131. According to UNSCEAR, iodine-131 has a half-life of only eight days, yet it is quickly inhaled through the air and has a tendency to concentrate in the thyroid gland.

A low-power test on the Chernobyl nuclear reactor power plant's Number Four RBMK reactor went awry on April 26, 1986, resulting in an explosion and fire that destroyed the reactor building and spilled a significant amount of radioactivity into the atmosphere.

After the SCRAM began, there was a significant power increase that caused the core to overheat. A few seconds later, this overheating led to the initial explosion. Several of the fuel rods cracked and became obstructed.

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During the first 15 seconds of intense exercise, such as sprinting or powerlifting, most of the energy is provided from phosphocreatine. Followed by energy via anaerobic glycolysis and finally aerobic metabolism

Most of the energy is provided by phosphocreatine.

Phosphocreatine is the phosphorylated form of creatine. It is primarily found endogenously in the skeletal muscles of vertebrates where it serves a critical role as a rapidly acting energy buffer for muscle cell actions like contractions via its ability to regenerate adenosine triphosphate (ATP) from adenosine diphosphate (ADP).

Anaerobic glycolysis is the transformation of glucose to lactate when limited amounts of oxygen are available. Anaerobic glycolysis is only an effective means of energy production during short, intense exercise.

Aerobic metabolism refers to an energy-generating system under the presence of oxygen as opposed to anaerobic, i.e., oxygen independent metabolism. Aerobic metabolism uses oxygen as the final electron acceptor in the electron transport chain and combines with hydrogen to form water.

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The quantity (the amount) of charge on the object will depend on the total number of electrons added to or subtracted from it.

"Q" stands for charge, while "C" stands for Coulomb. Mathematically speaking, the charge on a single electron is equal to a very little quantity of charge. Amperes are the units used to measure electric current; the ampere is represented by the letter A. A coulomb traveling through a spot in a wire in one second is equal to one ampere. I = Q t, where Q is the amount of charge passing a location in a certain amount of time, t I = 0.4 A t=1 hr=3600 s, allows us to determine current.

Charged Q=it=0.43600=1440 C.

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it would change it for it's format and identify it

Answer:

I believe A, if I'm wrong please inform me!!!

Explanation: