Aparticle moves in a plane elliptical orbit described by the position vectort- 2b sin(ot)1+ b cos(ot)0. (a) find the velocity, the acceleration, and the speed of the particle. (b) determine expressions for the velocity and the acceleration and find the angle between them at the time t-t/2o

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

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?

When you hold a rectangular object, how does the area of the side that is resting on your hand affect the pressure and the force that the object exerts?