A barrel (mass mLoad) is attached to a massless rope, which is attached to a hook (mass mHook), which is attached to the massless cable of a crane. The cable is accelerating up with an acceleration a. What is the tension of the rope?
1. (mHook+mLoad)·(g-a)
2. mHook·g+mLoad·a
3. mLoad·g+mLoad·a
4. mHook·(g-a)
5. mLoad·a
6. (mHook+mLoad)·(g+a)
7. mLoad·g
8. mLoad·g+mHook·a

Consider two metallic rods mounted on insulated supports. one is neutral, the other positively charged. you bring the two rods close to each, but without contact, and briefly ground the the neutral rod by touching it with your hand. show answer correct answer what would be resulting charge (if any) on the initially neutral rod

A17,250 kg rocket is pushed with a thrust of 6,450,284 n. what is the acceleration of the rocket?

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?