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What is the wavefunction of a particle in an infinite square well?

An infinite square well is a region with constant potential energy (inside the well) surrounded by a region of infinite potential energy (outside the well). Therefore, it is impossible for a particle to b...

Answered by Kelvin C. • Physics tutor

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You have a layer of glass with a refractive index of 1.5 and the glass is surrounded by air. A light ray shines into the glass and Total Internal Reflection occurs at the glass-air boundary. What is the critical angle?

This question tests your knowledge of Snell's law, Total Internal Reflection (TIR) and the fact that the refractive index of air is 1 (which should be memorised as it is in the exam). The critical angle i...

Answered by Kelvin C. • Physics tutor

3492 Views

What is the critical angle of a beam of light leaving a transparent material with a refractive index of 2?

Total internal reflection occurs only when light travels from a medium of high refractive index to a medium of low refractive index. This is the case for our problem (glass to air boundary, n=2 and n=1 re...

Answered by Arsenios H. • Physics tutor

4313 Views

Person A, weighing 35 kg, is sitting 10m away from a seesaw pivot. Person B, weighing 50 kg, it sitting at the other end, at a distance d. Calculate d, in order for the seesaw not to topple over. (g=10m/s^2)

Force@A: F_A = m_A x g = 35 x 10 = 350NAnticlockwise moment: M_A = F_Ax d_A= 350 x 10 = 3500NmForce @B: F_B=m_b x g = 50 x 10 = 500NC...

Answered by Antonia A. • Physics tutor

2099 Views

An ultraviolet wave of continuous frequency reflects from a solid surface back in the direction of the transmitter. Assuming no amplitude is lost, describe and explain the behaviour of the particles in the medium between the transmitter and surface.

The transmitted and reflected waves are of equal frequency and are both continuous, so they will superpose and interfere with each other. In the regions of maximal constructive interference, antinodes wil...

Answered by Jonas S. • Physics tutor

2186 Views