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klasskru [66]
2 years ago
14

List forms of energy which you use from morning when you wake up till you reach the school?

Physics
1 answer:
11Alexandr11 [23.1K]2 years ago
3 0

Answer:

mechanical energy, chemical energy, electrical energy heat energy sound energy light energy

.......

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A 55 kg roller skater is at rest on a flat skating rink, a 198 N horizontal force is needed to set the skater in motion.
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Answer:

Explanation:

To get the person Moving you have to overcome the static (means not moving) friction coefficient.  U(static)

To get the person going at the same speed you have to overcome the kinetic friction coefficient. U(Kinetic)

Force to get him moving is 198 N.   Force = ma = U(static)Mg

combining the 2 equations you get 198N = U(static)* 55kg *9.8m/s^2   Solve for U(static)

Same equation to keep him moving except with the dynamic force and the dynamic U

 

175N=  U(kinetic)*55kg*9.8m/s^2  Solve (U dynamic)

8 0
3 years ago
A block slides on a frictionless, horizontal surface with a speed of 1.32 m/s. The block encounters an unstretched spring and co
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Answer:

Explanation:

The given time is 1 / 4 of the time period

So Time period  of oscillation.

= 4 x .4 =1.6 s

When the block reaches back its original position when it came in contact with the spring for the first time , the block and the spring will have maximum

velocity. After that spring starts unstretching , reducing its speed , so block loses contact as its velocity is not reduced .

So required velocity is the maximum velocity of the block while remaining in contact with the spring.

v ( max ) = w A = 1.32  m /s.

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Why do you think spacecraft that carry instruments to collect data about objects in space are called probes?
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my mind cant comprehend a shing word u just said

Explanation:

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Explain how energy is transferred in an impact situation such as a car crash.
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