Find a tutor
How it works
Prices
Resources
For schools
Become a tutor
Answers
>
Physics
>
A Level
>
Article
What is magnetism?
A force between moving charges
AG
Answered by
Andrew G.
•
Physics tutor
1727 Views
See similar Physics A Level tutors
Related Physics A Level answers
All answers ▸
A satellite is in a stationary orbit above a planet of mass 8.9 x 10^25 kg and period of rotation 1.2 x 10^5 s. Calculate the radius of the satellite's orbit from the centre of the planet.
How to solve horizontally-launched projectile motion problems using equations of motion?
Using Newton's law of gravitation, derive a suitable formula for the escape velocity of an object at Earth's surface.
State what is meant by a Doppler shift and describe how it was used to study the movement of galaxies.
We're here to help
Contact us
Message us on Whatsapp
+44 (0) 203 773 6020
Company Information
Careers
Blog
Subject answers
Become a tutor
Schools
Safeguarding policy
FAQs
Using the Online Lesson Space
Testimonials & press
Sitemap
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
© MyTutorWeb Ltd 2013–2025
Terms & Conditions
|
Privacy Policy
CLICK CEOP
Internet Safety
Payment Security
Cyber
Essentials
Cookie Preferences