sonja is riding her bike. she takes her feet
off the pedals to freewheel down a hill.
describe the energy transfers that take place as the bike travels down the hill.
ignore friction and air resistance.

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?