Two blocks a and b each of mass m are placed on a smooth horizontal surface . two horizon forces f and 2f are applied on the two blocks a and b . the block a does not slide on block b . then the normal reaction between the blocks is

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?

Explain what happens at the saturation point when adding salt to water at room temperature.

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?