Going downhill a driver applies brakes to keep a constant speed. the potential energy of the car is decreasing while the kinetic energy is constant. explain where the energy is going

According to the query, the strain in the string would be 29.60N if the yo-yo rotated at a rate of 150 minutes per revolution.

Physicist tension illustration

Why is there tension? Any physical thing that is in contact with another item can apply pressures to that item. Depending on the sorts of objects in touch, we label these friction coefficient differently. We refer to the tension as tension if a rope, thread, chain, or cable is one of the things applying the force.

M= 0.20kg

r= 0.60m

Angular velocity = 150rev/min

ω= 150rev/min[2π rad/1rev][1 min/60 sec]

 ω= 15.70 rad/sec

As it revolve in a circle path, the centripetal force is equal to tension in string .

T = mω2r

  = (0.20)(15.70)(0.60)

  = 29.60N

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Time to take until there is only 1 pound left is half life,t  =  218,407 years.

The amount of time needed for the reactant concentration to drop to half its initial value is known as the half-life of a reaction. A constant that is connected to the reaction's rate constant is the half-life of a first-order reaction. First-order reactions include those in radioactive decay. The reduction in radioactive nuclei per unit of time is the rate of decay, or activity, of a sample of a radioactive substance.

Since y' = ky, we can infer that

y = C[tex]e^{kt}[/tex]

Since 500 pounds are initially present

C = 500

Because the half life is 24,360 years, y equals 250 when t equals 24,360. Connecting provides

250 = 500C[tex]e^{24,360k}[/tex]

1/2 = [tex]e^{24,360k}[/tex]

ln(0.5) = 24,360k

k=[tex]\frac{ln(0.5)}{24,360\\}[/tex]=[tex]-2.95 \times 10^{-5}[/tex]

 y = C[tex]500e^{2.95\times 10^{-5t} }[/tex]

 1 = C[tex]500e^{2.95\times 10^{-5t} }[/tex]

t  =  218,407 years.

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At speed v = 18.86 m/s = 67.8 km/h  a compact car have the same kinetic energy as a truck.

The energy of motion, or kinetic energy, can be observed in the motion of an object or a subatomic particle. There is kinetic energy in every particle every moving thing. A human walking, a baseball soaring through the air, food falling from a table, and a charged particle in an electric field are all instances of kinetic energy in motion.

Given in the question,

mass of car = 2000kg

mass of truck = 16000kg

speed of truck, vt = 24 km/h = 6.67 m/s

by using Kinetic energy equation for truck,

K = 1/2 mvt²

K = 1/2 ×16000×(6.67)²

K = 355911.2 J

since the kinetic energy is same for car and the truck

Kcar = Ktruck

1/2 mv² = 355911.2

v² = 355911.2/ 1000

v = √355.9112

v = 18.86 m/s = 67.8 km/h

At speed v = 18.86 m/s = 67.8 km/h  a compact car have the same kinetic energy as a truck.

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A 37 g plastic ball is travelling to the left at 14 m/s, hence 3.6j of effort must be done on the ball to make it move to the right. The definition of work done includes both the application of force.

Concerning the body and its movement. Consider a block placed on a horizontal, frictionless surface. A fixed force F exerts its influence on this block. This force acts to move the body through a distance d in a straight line and in the force's direction.

Work done to stop the ball is equal to 1/2m(v1^2 - v2^2) = 1/2(0.037)(0 - 14^2) = -3.6j.

Work performed to accelerate the ball equals 1/2m(v1^2 - v2^2) = 1/2(0.037)(14^2 - 0) = 3.6j.

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Option (c) reverberation is the best choice. Reverberation can be decreased by utilizing materials that absorb sound before it reaches the room's walls and ceiling, preventing the sound from being reflected.

Reverberation is the characteristic of sound that best explains what just happened in this scenario. Reverberation occurs when sound waves are reflected off of surfaces in a room, creating multiple echoes that can be heard. When a loud noise is made in a large room, the sound waves will reflect off of the walls, floor, and ceiling, creating a series of echoes that can be heard. This is known as reverberation.

Both open and closed places can produce echoes. In tight environments with many reflecting items, reverberation occurs. The distance of the item can be determined using the echos. Reverberation cannot estimate the distance of a reflecting object because the travel time is too brief.

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The final volume of the gas is 4.5 x 10-3 m3.

Final volume is the measure of the volume of a substance or object after all changes to it have taken place. It is the measure of the amount of space taken up by an object or substance at a specific point in time.

We can use the work-energy theorem to solve this problem. Work (W) is equal to the change in energy (E). Since the expansion is isobaric, the change in internal energy is zero. Therefore, W = E = PΔV, where P is the pressure and ΔV is the change in volume.
We know that W = 480 J and P = ?. To solve for ΔV, we can rearrange the equation to ΔV = W/P. Plugging in the given values, we have ΔV = 480 J / P.
We also know the initial volume (V1) of the gas, so we can calculate the final volume (V2) by adding the change in volume to the initial volume: V2 = V1 + ΔV. Plugging in the given values, we have V2 = 4.5 x 10-3 m3 + (480 J / P).
Therefore, the final volume of the gas is 4.5 x 10-3 m3.

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There are several types of chest braces that can be used to support a heavy camera. The include a camera harness, camera chest mount and stabilizing rig

One option is a camera harness, which distributes the weight of the camera across the shoulders and upper chest. Another option is a camera chest mount, which attaches the camera directly to the chest using straps. A third option is a stabilizing rig, which attaches to the camera and uses counterweights to balance the camera and reduce the strain on the user's arms. It is important to use the chest brace that best fits your needs and also consult with a professional if you have any doubts.

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An unbalanced force cannot overcome an objects inertia.

Define inertia?

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The wavelength of an electromagnetic wave in a vacuum is equal to the speed of light (c) divided by the frequency (f): 2.5 x 10^2 m

An electromagnetic wave is a type of energy wave that consists of oscillating electric and magnetic fields. These waves are generated by the vibration of electric charges and travel at the speed of light. Electromagnetic waves can be used to transmit information over long distances, such as in radio and television transmissions. They can also be used to transfer energy, such as in microwave ovens and solar cells. Electromagnetic waves come in many different forms, such as visible light, X-rays, and gamma rays.

λ = c/f
λ = 3.0 x 10^8 m/s / 12 x 10^6 Hz
λ = 2.5 x 10^2 m

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Inside an inelastic collision, a bullet that embeds into a block transfers its momentum to a bullet-block system. Using the principle of momentum conservation, we monitor the subsystems' speeds.

As momentum depends on both velocity and the direction of a body's motion, it is quantified by "mass velocity". Since motion is a vector and mass is a scalar, force and motion. Mass times speed equals momentum.

whenever you throw a ball at a person and it hits him in the face. It shows how challenging it would be to put a halt to the situation. In the air, a baseball is swooping. There is a big truck moving. a gun of this type shot a bullet.

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The block and table have a sliding friction coefficient of 0.083.

Although friction is assumed to be created by the interaction between the microscopic bumps on surfaces when they brush against each other, scientists are not entirely sure what causes it. It is challenging for the surface to slide over one another because the spikes on each surface flex and exert stress on one another.

The friction between both the edges can be decreased by using lubricants like oil or grease. Friction can be decreased by cleaning the surface, which makes it smooth.

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Generally, as molecular weight increases, the average speed of molecules will decrease. This is because heavier molecules, due to their greater mass, require more energy to move around and so they move more slowly than lighter molecules.

What is the molecules ?

Molecules are the smallest units of matter which have the properties of a particular substance. They are made up of two or more atoms held together by chemical bonds. Molecules can exist in different shapes and sizes, depending on the number and types of atoms they are composed of. They are essential building blocks of all matter, from the smallest to the largest. Molecules can be naturally occurring or created synthetically in a laboratory. Examples of molecules include water molecules, carbon dioxide molecules, proteins, and carbohydrates.

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If a 10 m/s velocity is used to force the pupil off the board. To reach the water will take 1.28 seconds.

The speed when something that moves in a specific direction is known as its velocity. as even the speed of something like a car driving north on something like a highway or the pace at which a rocket takes off.

It only contains magnitude since it is a scale parameter. Since a negative sign indicates a direction and rate does not indicate direction, the value can only be positive or zero.

Δy = vi t+1/2 at^2

v_ i = 0

a = 9.8 m/s^2

8 = 0 + 1/2(9.8)t^2

t^2 = 1.63

t = 1.28 s

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Answer:

Explanation:

Assuming that the woman is moving the basket of grapes at a constant speed, we can calculate the time it will take her by using the equation t = F/P, where t is the time in seconds, F is the force in newtons, and P is the power in watts. Plugging in the given values, we get t = 14/2 = 7 seconds. Therefore, it will take the woman 7 seconds to move the basket of grapes 10 m using 14 N of force and 2 W of power.

At a distance of four times the radius of the earth the gravity drops to g/16.

Acceleration due to gravity means the acceleration obtained by an object due to the gravitational force. Value is found out to be 9.8m/s²

The equation for acceleration due to gravity, g = GM/R²

G is the Gravitational constant

M is the mass of earth

R is the radius of the earth.

When the acceleration due to gravity is g/16,

    g/16 = GM/r², r is the distance from the earth.

    Substituting the value of g,

         GM/R²/16 = GM/r²

 Cancelling GM on both sides

      1/R² = 16/ r²

     r² = 16× R²

     r = √(16×R²)

        = 4R

So the acceleration due to gravity falls to g/16 when the distance from the earth is four times its radius.

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The impulse of the golf ball is 1.7 kg.m/s. The average force that the club exerts on the golf ball is 855 N and the average force that the golf ball exerts on the club is -855 N.

A vector quantity is force. Its amplitude and the way it acts are two characteristics that might be used to characterize it.

The mass of the ball  m = 45 g = 45 · 10⁻³ kg

Initial velocity V = 38 m/s

Contact time t = 2 · 10⁻³ s

The impulse is calculated according to the formula:

I = m · V = 45 · 10⁻³ · 38 = 1,710 · 10⁻³ = 1.71 kg m/s

I = 1.71 kg m/s

The average force is calculated according to the formula:

F = ΔI / Δt = 1.71 / (2 · 10⁻³) = 855 N

F = ΔI / Δt = 1.71 / (2 · 10⁻³) = 855 N

F = 855 N

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In the solar system the planets are revolving about the sun and rotation about their axes in a counterclockwise direction and revolving from west to east. Hence option 'b' is correct.

The circular movement of an object about its center is referred to as rotation. Things can rotate in a variety of ways. the Earth's rotation. When a round, three-dimensional object rotates around in an invisible line inside of its center, it is a relatively common type of rotation.

The term "rotation" describes how an object spins around its own axis. When an object is in revolution, it is moving in an orbit around another object. For instance, the 24-hour day is created as the Earth moves on its own axis. The 365-day year results from the Earth's rotation around the Sun.

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When trying to detect extraterrestrial civilizations with radio telescopes, we do not have to worry about the power source of the telescope. Thus option D is the correct answer.

When trying to detect extraterrestrial civilizations with radio telescopes, we do not have to worry about the power source of the telescope. The power source is used to operate the telescope and its various components, but it does not affect the ability to detect radio signals from extraterrestrial civilizations.

However, we have to worry about other factors such as channel size, time to detect, the polarization of radio waves, radio frequency, and direction in the sky. The channel size of the telescope is important as it determines the range of frequencies that can be detected. The time to detect refers to how long the telescope must observe in order to detect a signal.

Radiofrequency is also important as it determines the range of frequencies that can be detected. And the direction in the sky is important as the telescope must be pointed in the right direction to detect a signal.

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Answer:

Explanation:

2'75·10∧-4

The reaction energy Q of the reaction is 195 MeV.

₉₂U²³⁵ + ₀n¹ → ₅₄Xe¹⁴⁰ + ₃₈Sr⁹⁴ + 2 ₀n¹

Mass of reactants = 235.04393 + 1.008665 = 236.052595 amu

Mass of products = 139.92144 + 93.91523 + 2* (1.008665) = 235.854000 amu

Mass defect Δ m = 236.052595 - 235.854000 = 0.198 amu

Reaction energy released Q = Δ m * 931.5

                                             = 0.198 * 931.5 = 185 MeV

What is the reaction energy?

The overall reaction energy also referred to as enthalpy, is expressed as the change in energy between the products and the reactants via subtraction. If the reactant energy is higher than the products, then the overall energy will be negative, resulting in an exothermic reaction.

What is the reaction formula?

A chemical reaction equation gives the reactants and products, and a balanced chemical reaction equation shows the mole relationships of reactants and products. Often, the amount of energy involved in the reaction is given.

Thus, reaction energy Q is 185 MeV.

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Answer:

Explanation:

The work that must be done to lift the mass is W = F x d = 1000 kg x 9.8 m/s2 x 150 m = 1,470,000 Joules (1.47 x 106 J).

The time it will take to lift the mass at a constant speed is t = W/P = 1.47 x 106 J/7500 W = 196 seconds (3 minutes 16 seconds).

Explanation:

Power = 7500 watts

mass = 1000kg

height/distance= 150m

work= ?

time = ?

second equation for motion

2nd law of newton

F = ma

for free fall motion a = g= 9.8

force = 9800Newton

now for work done

w = force into displacement

workdone = 1470000 Joules

now finally by power formula

p = workdone upon time

time = workdone upon power

time = 196 second

I hope this would help you!

Energies of infrared photons are the same as the energies of chemical bonds. Molecules absorb infrared photons of characteristic wavelengths, revealing the types & strengths of different bonds in the molecules.

There are several uses for infrared technology. Heat sensors, thermal imaging, and night vision gear are some of the most well-known types. Infrared light is employed in wired and wireless activities in communications and networking.

The human eye cannot sense infrared light because it has different range and less energy than visible light. However, several snake and scorpion species, bed bugs, vampire bats, and mosquito species can see by using parts of the infrared spectrum. Infrared energy can occasionally be "seen" by people as heat.

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A spring has a spring constant;Work = 1/2 * k * (Δx)^2,

Work = 1/2 * 10.0N/m * (0.065m - 0.04m)^2,Work = 0.009825 J

What is the constant ?

The constant in mathematics is a number that has a fixed value. A constant can be a single number, such as pi or e, or it can represent a set of numbers, such as the set of prime numbers. Constants are often used in equations and formulas to represent values that do not change. For example, the equation for the area of a circle is A = πr2, where π is a constant with a value of 3.14159.

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The horizontal and vertical is 1188.321ft/sec and  the velocity is g =32.174 = 32.174t.

Horizontal pertains to everything that is perpendicular to the horizon. Anything that forms a 90-degree angle (right triangle) with the straight or the horizon is referred to as vertical because it is the opposite of the horizontal. The line that spans from left to right is therefore considered to be horizontal.

horizontal velocity = Vcos the

                               = 1200*cos 8

after time t, horizontal velocity = 1200cos8 ft/sec (it is constant) = 1188.321ft/sec

vertical velocity = V sin theta

                          = 1200*sin8

vertical velocity v= 1200sin8-gt = 167-32.174t ft/sec (till t = 5.19sec)

g =32.174 = 32.174t ft/sec (after t = 5.19sec)

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Both before and after the explosion, the rocket's centre of mass will continue to move along its original parabolic trajectory. Regardless of whether the rocket's trajectory was parabolic or not.

A location established in relation to an object or set of objects is the centre of mass. It represents the system's average location as weighted by each component's mass. The center of mass for straightforward stiff objects with homogeneous density is found at the centroid.

The center of mass of the pieces will continue to move along the same parabolic direction that the rocket would have taken if it hadn't detonated, just as it did immediately before it did.

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If you plug in a 220v appliance into a 120v outlet then whatever that would happen would depend upon the kind of load.

If one is have a passive load that is without power electronics. For example- a basic heater, then the  current in the device would be reduced to the half of the actual and its power will reduce to a quarter according to the Ohm´s law. But if one is having an active load where its power is kept constant, it will consume double the amount of current in order to compensate for the reduction of voltage that has occurred. This could eventually lead to the device getting damaged.

Voltage is defined as the pressure from an electrical circuit's power source which eventually pushes charged electrons (current) through a conducting loop, and enables them to do work such as illuminating a light.

Voltage = pressure, and it is measured in volts (V).

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The bulldozer's work done is measured in joules is 954000J, since it is capable of moving a boulder 53 metres with 18,000 newtons of force in just 60 seconds. Force and motion must coexist.

Applied to the body as well as to how the body moves. Consider a block that has been placed on a flat, frictionless surface. This block is affected by a constant force F. The body is moved by this force across a distance of d in a straight line and in the force's direction. In physics, a force is an effect that has the ability to change how an object moves. Due to a force, a massed object may change.

Work done = Force*cos(theta)*d = Force*d = 18,000*53 = 954000J

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Dilute the unknown until its absorbance is inside the standard curve. The full strength concentration can be calculated after identifying the diluted quantity if the dilution process is documented.

A chemical that is present in large quantities relative to the volume is said to have a high concentration in a solution. For example, the Great Salt Lake contains very few fish due to the high concentration of salt.

You can determine how much solute has been dissolved in the solvent by looking at the concentration of the solution. For instance, the concentration may be stated as 1 teaspoon of salt per 2 cups of water if you add 1 teaspoon to 2 cups of water.

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Answer:

it is proportional to masses of two objects