A220 g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.150 s. if the total energy of the system is 1.50 j, find the following(a) the force constant of the spring(b) the amplitude of the motion.

Hydrogen and helium are both members of?

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and

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?