Light from three different lasers (a, b, and c), each with a different wavelength, was shined onto the same metal surface. laser b produced no photoelectrons. lasers a and c both produced photoelectrons, but the photoelectrons produced by laser a had a greater velocity than those produced by laser c. arrange the lasers in order of increasing wavelength.

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?

In a set amount of time, a battery supplies 25j of energy to an electric circuit that includes two different loads. one of the loads produces 10 j of heat energy during this time interval. how much heat energy is produced by the second load in this time? explain your answer

Explain why electric current cannot exist if a current doesn't have a voltage source.