Fiberglass, an insulator, can be found in the walls and roofs of some houses and buildings. Why would an insulator be needed inside of buildings in the winter?

A) It makes the building look pretty.
B) It keeps the heat inside of the building.
C) It keeps the heat outside of the building.
D) It keeps the cool air inside of the building.

Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

What do you think car designers do if the damage caused by a crash test is too severe?