Answer:
E = q V B describes the electric field induced
E Proportional to V B
while the magnet is pushed into the coil the induced field (B) will increase (consider 1 turn of the coil)
If V is constant the E-field will increase due to increasing B and the galvanometer will deflect accordingly
When V drops to zero the deflection must again be zero
So one would see a blip due to the deflection of the galvanometer
Note that as V increases the galvanometer will deflect one way and then as V drops to zero the deflection will be opposite (drop to zero when V is zero)
B always increases to a constant value because of the properties of the magnet.
Answer:
0.16 Hz
Explanation:
frequency = speed/wavelength
= 20/125 = 0.16 Hz
Answer:
If two sound waves differ in intensity, the wave that is more intense sounds_________.
Answer: Louder
Answer:
Explanation:
Given
mass of ball is m
initial velocity of ball is 
Final velocity of ball is 
Impulse is the change in momentum of an object when an external force is applied for a given interval of time.
Initial momentum 
Final momentum 
