Search our library of Physics A Level questions

Top answers

Physics

A Level

Given that a light ray enters a glass prism at angle of 50 degrees from the normal and is refracted to an angle of 30 degrees from the normal, calculate the speed of light in glass.

Answer: 1.9610⁸ms^-1.Snell's law tells us that n₁sin(x₁)= n₂ sin(x₂) where x is the angle of a light ray from the normal. Air can be as...

Answered by Charlie H. • Physics tutor

2167 Views

describe how a microwave oven works (EM waves + thermal physics)
microwaves are Electromagnetic waves with a wavelength in the order of 10^-6m (the prefix for 10^-6 is micro, just as 10^-3 is milli). these short wavelength waves have a high energy due to equation E=hc/...
Answered by Andrew E. • Physics tutor
2203 Views

A car of mass m is travelling at a speed v around a circular track of radius r banked at an angle θ. (a) What is the centripetal acceleration of the car? (b) What is the normal force acting on the car? (c) If θ = 45°, r = 1 km what is the maximum speed?
(a) The formula for the centripetal acceleration of an object undergoing circular motion at a radius r and speed v is a = v^2/r so as F = ma the centripetal force is F = mv^2/r. 2 marks By...
Answered by Jack M. • Physics tutor
4628 Views

In an electric propulsion system, alpha particles are accelerated through a potential difference of 100kV at an average rate of 10^20 alpha particles per second. Calculate the average thrust the system can provide.
Take the mass of alpha particle to be 6.6410^-27 kg accurate to 3 s.f. Note that the the work done in an electric field accross a potential difference is E = QV, where Q is the total charge of the alp...
Answered by Alexandru A. • Physics tutor
2244 Views

A bullet is fired horizontally from a gun at a height of 1.5m at 280m/s. Calculate the time taken for it to hit the ground. A second bullet is fired from an adjacent gun at 370m/s. Calculate the distance it travel before the first bullet hits the ground.
Time for first bullet to hit ground: s = -1.5m, u = 0ms^-1, v = ?, a = -9.81ms^-2, t = ?.s = ut + 1/2(at²)-1.5 = 0 + 1/2(-9.81t²)9.81t²= 1.52 ...
Answered by Ayush N. • Physics tutor
3047 Views

←
55
56
57
58
59
→

Popular Requests

Maths tutor Chemistry tutor Physics tutor Biology tutor English tutor GCSE tutors A level tutors IB tutors Physics & Maths tutors Chemistry & Maths tutors GCSE Maths tutors

Terms & Conditions|Privacy Policy|Cookie Preferences

CLICK CEOP
Internet Safety

Payment Security

Cyber
Essentials

Cookie Preferences

Search over 10,000 free study notes

Top answers

Given that a light ray enters a glass prism at angle of 50 degrees from the normal and is refracted to an angle of 30 degrees from the normal, calculate the speed of light in glass.

describe how a microwave oven works (EM waves + thermal physics)

A car of mass m is travelling at a speed v around a circular track of radius r banked at an angle θ. (a) What is the centripetal acceleration of the car? (b) What is the normal force acting on the car? (c) If θ = 45°, r = 1 km what is the maximum speed?

In an electric propulsion system, alpha particles are accelerated through a potential difference of 100kV at an average rate of 10^20 alpha particles per second. Calculate the average thrust the system can provide.

A bullet is fired horizontally from a gun at a height of 1.5m at 280m/s. Calculate the time taken for it to hit the ground. A second bullet is fired from an adjacent gun at 370m/s. Calculate the distance it travel before the first bullet hits the ground.

We're here to help

Company Information

Popular Requests

© MyTutorWeb Ltd 2013–2024

CLICK CEOP