Answer:
It says about the motion and the graph of the object is stationary, basically travelling at the same speed at any time of the graph. It will never change.
Explanation:
To draw a diagram:
1. Draw an object and represent the speed as stationary and constant at any time.
Answer:

Explanation:
From the equation we are told that:
Velocity of French sub 
Velocity of U.S. sub at 
French Wave Frequency 
Velocity of wave 
Generally the equation for Signal's frequency as detected by the U.S. is mathematically given by
Doppler effect



Answer:
The electrons in an atom can only occupy certain allowed energy levels. ... Only certain energy levels are allowed, so only certain transitions are possible and hence specific wavelengths are emitted when an electron drops to a lower energy level.
Answer:
C. The procedure scientist use to gain knowledge about the ohysical world
Explanation: