A 3 kg mass is attached to a spring on a level surface and is oscillating with amplitude of 30 cm. The spring has a constant, k= 3N/m. The spring is in equilibrium at time t=0. What is the kinetic energy at time t = 0 sec? 0.135 J
0.30 J
0.270 J
0.45 J

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Which is special about a dc circuit ? a. it has both series and parallel components b. it has only series or only parallel components c. charge moves in a single direction d. charge moves back and forth quickly

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?