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katrin [286]
3 years ago
10

True or false? objects that are sitting still have kinetic energy

Physics
1 answer:
alekssr [168]3 years ago
5 0

Kinetic energy is the energy of an object due to its motion. An object sitting still isn't moving, therefore it has no kinetic energy. The statement in the question is false.

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Name of a body that changes Chemical energy to electric energy.​
Ratling [72]

Answer:

battery

Explanation:

A battery contains stored chemical energy and converts it to electrical energy. (cK.12)

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3 years ago
A car starts from rest and after 7 seconds it is moving at 42 m/s. What is the car’s average acceleration? A. 0.17 m/s2 B. 1.67
aliya0001 [1]
Acceleration =velocity /time
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A technician attaches one lead of a digital voltmeter to the ground terminal of the TP sensor and the other meter lead to the ne
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3 years ago
How do dog whistles work?
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3 years ago
An ambulance with a siren emitting a whine at 1790 Hz overtakes and passes a cyclist pedaling a bike at 2.36 m/s. After being pa
Deffense [45]

Answer:

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let the velocity of the ambulance be 'vₓ'

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the Doppler effect is given as:

f'=f\frac{v\pm v_o}{v\pm v_x}

where, v is the speed of sound

since the ambulance is moving towards the cyclist. thus, the sign will be positive

thus,

v_x=\frac{f}{f'}(v+v_o)-v

on substituting the values, we get

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6 0
3 years ago
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