Answer:
KE increases and PE decreases.
Explanation:
<u>POTENTIAL ENERGY (PE)</u>:
The potential energy of the rock depends upon the height of the rock, as given by the following formula:
P.E = mgh
Therefore, the potential energy will be highest at the initial point due to the highest height attained by rock. As the rock falls, its height will decrease as a result its <u>potential energy will also decrease</u>.
<u>KINETIC ENERGY (KE)</u>:
The kinetic energy of the rock depends upon the velocity of the rock, as given by the following formula:
Therefore, the kinetic energy will be zero at the initial point due to the zero velocity of the rock. As the rock falls, its velocity will increase as a result its <u>kinetic energy will also increase</u>.
Hence, the correct option will be:
<u>KE increases and PE decreases.</u>
The question is not well presented.
There is ______ shift in sound frequency for observers towards whom the source is approaching.
Answer:
The gap should be filled with an apparent upward
Explanation:
The Doppler effect (also referred to as the Doppler shift) is the difference in frequency of a wave when related to an observer who has a relative movement to the wave source
The Doppler effect can be observed to occur with all types of waves - most notably water waves, sound waves, and light waves
The Doppler effect describes sound as an effect which is produced from a moving source of wave.
According to the Doppler effect;
When the source of waves in which there is an apparent upward shift in frequency for observers towards whom the source is approaching.
The three things that are necessary are power, a force, and movement in the opposite direction of the applied force.
Answer:
2.12x 10 -3
Explanation:
i dont really have explanation but like that's how it works
Answer:
F = [M] × [L1 T-2] = M1 L1 T-2.
Explanation:
Therefore, Force is dimensionally represented as M1 L1 T-2.
