True or false

1 answer:

6 0

As the car is moving it indicates that the kinetic energy is being represented. That's why I am pretty sure that this statement is correct! That's all you need to know to solve this. Regards!

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Andrea and the other members of the tennis team are practicing hitting tennis balls. If two people hit identical balls at the sa

Pachacha [2.7K]

If two people hit identical tennis balls at the same time, the ball that has the most kinetic energy is the ball that moves at the fastest speed.

<u>Explanation:</u>

The energy possessed by an object by virtue of its motion is called its kinetic energy indicating that only moving objects have kinetic energy. The kinetic energy of an object depends on its speed and mass.

It is given by the expression

$K=1/2 mv^2$

where m denotes the mass of the object and v denotes its velocity.

since kinetic energy is directly proportional to the square of the velocity, the kinetic energy of an object increases with its velocity.

Hence an object that moves at the fastest speed will have the most kinetic energy.

8 0

3 years ago

Hermann von Helmholtz said that one hears different pitches because different sound waves trigger activity at different places a

nevsk [136]

Answer:

Place theory.

Explanation:

Place theory explains the different perception of sounds on the basis of the different sound waves. This theory helps to explain how the individual can differentiate different pitch sounds.

The different sound frequency causes vibration at the basilar membrane of the cochlea. The different areas of cochlear membrane gets activated by the different frequency of sound. These different vibration enable to distinguish between high pitch and low pitch sounds.

Thus, the answer is place theory.

7 0

4 years ago

Read 2 more answers

Complete this sentence. If the mass of an object blank, the weight of an object will blank

Archy [21]

If the mass of an object doubles, the weight of the object also doubles

If the mass of an object halves, the weight of the object also halves

Explanation:

The mass of an object is an intrinsec property of the object that gives a measure of the "amount of matter" in the object. Mass is indipendent from the location of the object.

On the contrary, weight gives a measure of the force of gravitational attraction felt by the object in a gravitational field. Weight is dependent on the location.

The mass and the weight of an object are related by the following equation:

$W=mg$