Search over 10,000 free study notes

Firstly, quantisation of energy means that energy can only exist for specific, discrete values, i.e. it is not continuous. Now, photons display this phenomena however it is not immediately obvious why, as...

Uses for x-rays: Detecting broken bones, Cancer treatment, CT scans._
Uses for Ultrasound: Pre-natal scanning, Destruction of kidney stones/plaque on teeth, Internal imaging of body parts._

A...

In order to find the velocity, we need to know the distance covered by the ball in a known length of time. We are given the distance, 5.0 m, therefore we need to compute the time of flight of the ball. Th...

Velocity is a vector quantity so takes both magnitude and direction into account. Speed is a scalar so only takes magnitude into account. They both have units of meters per second.

To begin with, we need to draw a graph with all of the forces acting on a body.

From that, we can see that the net force Fnet = Fg - Fc , where Fg is gravitational force and Fc is centripetal ...