A 7 cm string that is fastened at both sides is plucked. What is the wavelength of the n = 4 standing wave?.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

What is special about a dc circuit ?

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?