Block with mass of m is shot from the point A with initial velocity of Vo=5m/s.
Starting from point C, block experience
friction force and comes to rest at point D.
If the magnitude of the friction force
equals to mechanical energy of the block
at the point where the block is 6m above
from the ground, find the distance CD.
(h1=15m, h2=6m, g=10m/s?)

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.