A0.10 g honeybee acquires a charge of +23 pc while flying.
a. the electric field near the surface of the earth is typically 100 n/c, directed downward. what is the ratio of the electric force on the bee to the bee's weight?
b. what electric field strength and direction would allow the bee to hang suspended in the air?

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

How do you tell if someone actually cares about you? and just say they do?

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.