An empty sphere is charged. (the inner and outer radii of the sphere are $R_0$ and $R$). Please find the empty sphere field and potential as functions of $R$. What… Click here to read more
Welcome to Physics Homework - Questions & Answers
This site was started back in 2008, and features, among others, a collection of physics homework exercises and tutorials for all levels of physics students (high school and college).
We hope our site will help you advance in your studies and make it easier to understand physics, hence the world that surrounds us!
All the contents of this site were written by Valentin Bogatu (Physics, PhD).
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You are given a swinging pendulum that has a length of $l=10 cm$. This pendulum oscillates with a small amplitude. The amplitude of this swinging pendulum is $A=1 cm$ (when… Click here to read more
Potentiometer and Resistor The resolution of a potentiometer is 0.1 mm, its length is 50 mm and its diameter is 5 mm. Please find the total resistance if the wire… Click here to read more
Wire loops in an external magnetic field One wire loops that is having a current 0f 140 mA and a radius of 0.06 m. This loop is situated in a… Click here to read more