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 earliest point in the universe that we can observe? why can’t we see back further than this?

Which types of electromagnetic waves have higher frequencies than the waves that make up ultraviolet light? check all that apply. radio waves infrared light microwaves gamma rays visible light x-rays

The two required components for a generator