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1. First, decompose the initial velocity (u) into x and y components using trigonometry. These are x= ucos(theta) and y=usin(theta)
2. Note that the x (or horizontal) component does not change bu...

Well actually, it does. Remember that the velocity is a vector and so is the force. Since F=ma, the acceleration due to a given force points in the same direction as the force itself. The magnetic force i...

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...