A mover brings a box up the stairs in 10 m on the box, calculate the power requierd for him to complete his action

Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge

5400 j of energy are given off when a 50 g of aluminum pan changes temperature. does the temperature of the pan increase or decrease and by how much