A 12 kg box is pulled to the right by a 350 N force that is 30 degrees above the horizontal. A constant frictional force of 120 N opposes it. What is the net horizontal force acting on the box?

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

In the first law of thermodynamics, triangle e=q-w, what does q stand for

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?