Answer:
the formula for the force of gravity depends inversely of the distance and directly of the masses.
This means that if the masses increase and their distance remains the same the force will increase proportionally.
What is the energy difference between the second excited state and first excited state of an electron in the "box" of size L=1nm
1 answer:
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The frequency of bird chirping hear by hiran will be 1.77 kHz.
<u>Explanation:</u>
As per Doppler effect, the observer will feel a decrease in the frequency of the receiving signal if the source is moving away from the observer. So the shifted frequency is obtained using the below equation:
Here , c is the speed of sound, Vs is the velocity of source with which it is moving away. f is the original frequency of source and f' is the frequency shift heard by the observer.
As here, f = 1800 Hz, Vs= 6 m/s and c = 343 m/s, then
So, the frequency of bird chirping hear by hiran will be 1.77 kHz.