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Physics
A Level

How are X-rays created?

High energy electrons are fired at a target. When the electrons interact with the atoms in the target two things can happen. The first process is called breaking radiation and occurs when the electron is ...

Answered by Charlotte K. Physics tutor
1391 Views

What is the minimum height of a hill, so a ball of mass m falling from it can go through a loop of radius R?

There is only one requirement for the ball to go through the loop. Its energy must be such that the centrifugal force experienced by the ball when it is at the peak of the loop is greater than gravity pul...

Answered by Gabriel P. Physics tutor
2372 Views

Derive the Drift Velocity Equation

(The drift velocity is the average velocity of a charge carrier due to an electric field)Consider a conductor with length l and cross sectional area AThere are n electrons per unit volum...

Answered by Francois M. Physics tutor
3074 Views

Describe simple harmonic motion (SHM). Sketch a displacement-time graph for a particle undergoing SHM and the corresponding velocity-time and acceleration-time graphs. Use these graphs to describe the relationship between accleration and displacment.

Simple harmonic motion is periodic motion in which a restoring force acts in the opposite direction to that of displacement and is directly proportional to the displacement.The displacement-time graph for...

Answered by David G. Physics tutor
3715 Views

What is the definition of a moment?

A moment is the product of force and the perpendicular distance from the pivot to the line of action of the force.

Answered by Odin G. Physics tutor
1750 Views

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