Which of these example would illustrate that work in being done? A) an airplane sits on the runway ready to takeoff B) a weightlifter attempts to pick up the barbell, but it does not move C) a construction worker pushes on a concrete wall until he becomes exhausted D a high school freshman lifts a backpack full of textbooks onto her shoulder

If you touch a hot light bulb and get burned, that is an example of a. radiation b. convection c. conduction

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?

Avoltaic cell converts chemical energy to