The weight of a 100 n laser printer is spread over 0.5m2. what is the pressure it exerts?
a) 50 n/m2
b) 200 n/m2
c) 500 n/m2

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

As microwave light travels through a liquid, it moves at a speed of 2.2 x 108 m/s. if the frequency of this light wave is 1.1 x 108 hz, what is the wavelength of this microwave?

You notice the birds sitting on the electrical wires which of the following explain why the birds don't get shocked