#2 to #5 apply to the following situation: Two identically shaped small balloons are suspended 0.2 m apart.
There is a charge of 40 x 10-6 C on one, and a charge of +20 x 10-C on the other.

If the balloons are touched together and then separated, the charges (in uC) on them
will be

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?