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Marianna [84]
3 years ago
8

A car is moving at high speed along a highway when the driver makes an emergency braking. The wheels become locked (stop rolling

), and the resulting skid marks are d = 33 meters long. The coefficient of kinetic friction between tires and road is μ = 0.55 and the acceleration was constant during braking. Write an equation for the speed of the car when its wheels became locked using variables from the problem statement. Use g for acceleration due to gravity.

Physics
1 answer:
PIT_PIT [208]3 years ago
7 0

Answer: Please see the attachments below

Explanation: Please see the attachments below

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3 years ago
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An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. the maximum speed of the o
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<span>First of all, the maximum speed occurs when the object passes through the
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The kinetic energy when the object has this max speed is

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U= 1/2 * k * xmax^2

The maximun force of the spring is

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m * 6.89 m/s2 = k * xmax
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</span>m * 1.56  =  k * (<span>6.89* m / k )^2 </span>
<span>
1.56 m = 47.47 m^2 / k
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period = 2 *pi*sqrt[m/k]
= 2 pi </span><span>sqrt [ </span><span>0.032862]
= 1.139  s

  A fourth of the period elapses between the instants of max acceleration and maximum speed

= 1/4* period
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7 0
4 years ago
PLEASE ANSWER, 75 PTS, AND BRANLIEST!
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Answer:

An electromagnet is a device which moving electric charges(current) in a coil of wire create a magnet. Electromagnets can easily be turned off and on because it is a electromagnet. When current flows through a wire, a magnetic field is produced around a wire and create an electromagnet. The coils are always made of copper wire because copper is a good conductor of electricity.

Explanation:

7 0
3 years ago
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Answer: JOB

Explanation: They full forms of work are JOB which is JUST OBEY BOSS or Joining Other Bussiness .

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What is the rate at which work is done?
LiRa [457]

Answer:

The rate at which work is done would be power. Bonus: The SI unit of work is Joules.

Explanation:

Hope this helped, nya~ :3

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