Calculate the energy transfers in joules by a 4kW by appliances left for 2 minutes

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

What is the angular momentum of the bar about the axle?

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.