If a crane lifts a crate that weighs 50N up 3m is 3s. How much power is required?

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?

How much energy will be transferred to your eardrum while listening to this sound for 1.0 min?