Calculate the force between charges 4 x 10^-8 C and 1.8 x 10^-6 C if they are 3.5
m apart.

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is

A51 kg woman skis down a hill and her kinetic energy is 9.96e4 j. what is her speed?