A 0.60 kg rubber ball has a speed of 1.5 m/s at point A and kinetic energy 7.6 J at point B Find a) the ball's kinetic energy at A. Answer in units of J.

b) the ball’s speed at B. Answer in units of m/s.

c)the total work done on the ball as it moves from A to B. Answer in units of J.

If you put a helium-filled balloon in the refrigerator, what will happen?

Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?

Ahorizontal force of 400.0 n is required to pull a 1760 n truck across the floor at a constant speed. find the coefficient of sliding friction.