Awater wave of wavelength 859 cm travels a distance of 64 m in a time of 14 s. what is the period of the wave, in units of seconds?

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

Aknife blade 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?