Suppose you have a cloth and a balloon. Explain how the balloon is charged in terms of static charges.
(Assume the balloon becomes positively charged)

(ii) After the balloon has been charged with static electricity, It is brought close to a wall and it sticks to the wall .
Explain how this happens in terms of static electricity.

A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m

Energy flows from the producer level to the level. is called

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up