Which part of a telescope focuses the incoming light? I thought it was the mirror but people are telling me I am wrong?

How to find the frictional force acting on an object (not the friction coefficient) ? ... ?

A rocket is moving with constant velocity of 2000ms and accelerates uniformly at 10ms. What is the velocity after 5 minutes?

What is the fundamental source of electromagnetic radiation?

The zone of earthquakes and volcanoes surrounding the pacific ocean is called

If this 1300 kg car is driven at 27 m/s through the bottom of a circular dip in the road that has a radius of 600 m, by how much do these springs compress compared to when the car is driven on a flat road

How much heat is absorbed by a 61g iron skillet when its temperature rises from 5oC to 29oC?

Explain the relationship between motion and frame of reference.

Two students are looking at a brightly lit full Moon, illuminated by the reflected light from the Sun. Consider thefollowing discussion between the two students about what the spectrum of moonlight would look like.

When performing a battery load test, what should the load be set to?

If you push on a wall of a building what will happen