This is the result of unbalanced forces making an object speed up

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

The current in a hair dryer measures 11 amps. the resistance of the hair dryer is 12 ohms. what is the voltage?unit:

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?