A hair dryer is supplied with 900 coulombs of charge per minute.
What is the current in amperes?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

What is friction? how does it affect the motion of an object?