Electricity and Magnetism Answers

Discuss uniform circular motion to calculate centripetal acceleration, time period, scalar
components of velocity vector, acceleration vectors and the angle between x and y components of
acceleration. Draw respective diagrams showing displacement vectors, velocity vectors and acceleration
vectors.

I'm thinking of making a contraption that can produce electricity by the 'wind' cars produce while the car is moving. My idea is that i build some cylidrincal contraption that can be fitted onto the light poles on highways so that the wind of the cars can rotate the cylinder. The cylinder consists of two layers. The inner layer is fitted onto the light pole with magnets and the outer layer consists of the copper coil that rotates to cut the magnetic flux to produce an induced current. My question is is there any way to let the outtrt layer rotate freely and how to connect the wires so that it wont get entagled when the outer layer is rotating. Thanks!

Two charges are placed on the x-axis. One of the charges (q1 = +9.0 µC) is at x1 = +3.2 cm and the other (q2 = -24 µC) is at x2 = +8.1 cm.
(a) Find the net electric field (magnitude and direction) at x = 0 cm. (Use the sign of your answer to indicate the direction along the x-axis.)
(b) Find the net electric field (magnitude and direction) at x = +5.7 cm. (Use the sign of your answer to indicate the direction along the x-axis.)

A 60.2 kg skier rides a 831.5 m long lift to the top of a mountain. The lift makes an angle of 16.8o with the horizontal. How much work needs to be done on the skier to get her to the top of the mountain?

q1= 20nC, q2=10nC located on the x axis. x=0 and x=1 meter respectively. Where on the x axis is electric field zero?

how to like currents attract each other and how to unlike currents repull each other?

if you have two coils both have currents in anticlock wise direction the what you can say about the force between them (attraction or repulsion ) and how?

I am getting time limit exceeded in. Codeforce problem, is there any built-in library header file to fix the problem of time limit exceeded?? #include<exception>not working but it's worked in runtime error.
I want time limit exceeded handling header file
Please let me know soon..

Two particles carrying equal charges move parallel to each other with speed 150 km/s. If F(1) and F(2) are magnetic and electric forces between two charged particles then the ratio of F(1)/ F(2) is
Ans 25×10^-8

how did the distance of the sensor from the electromagnet affect the reading on the sensor