Two small nonconducting spheres have a total charge of 93.0 μc . part a
when placed 1.14 m apart, the force each exerts on the other is 10.3 n and is repulsive. what is the charge on each?
q1,q2=

part b
what if the force were attractive?
q1,q2=

What is friction? how does it affect the motion of an object?

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy.work depends on the square of the change in potential energy.work is equal to the negative of the change in kinetic energy.work is equal to the square of the change in kinetic energy

An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?