Answer:
C. They have the same change of momentum.
Explanation:
Let "m" be the mass and "v" the velocity.
According to the property of conservation of momentum, when objects 1 and 2 collide:
Therefore, one can conclude that the change in momentum (Δ(mv)) has the same magnitude but opposite sign for any two objects regardless of how much heavier one might be than the other.
They have the same change of momentum.
Answer:
-17.8 V
Explanation:
The induced emf in a coil is given as:
where N = number of loops
dB = change in magnetic field
r = radius of coil
dt = elapsed time
From the question:
N = 50
dB = final magnetic field - initial magnetic field
dB = 0.35 - 0.10 = 0.25 T
r = 3 cm
dt = 2 ms = 0.002 secs
Therefore, the induced emf is:
Note: The negative sign implies that the EMf acts in an opposite direction to the change in magnetic flux.