Physics Answers

What makes a material a better conductor than another material?

A conducting cylinder of radius 3.25 cm and length 5.6 cm has a total charge of 5.5 x 10^-9 C distributed uniformly on its surface area. Find for the potential at its surface.

Find the distance of an isolated positive point charge of 10 nC, in order for it to produce

an electric potential of 120 V.

compute the electric force between two charges of 5×10^-9 C and -3×10-8 C which are reparated by r=10 cm

A particle charge 4 x 10 ^-9 C is located at a point (0,0) in a certain coordinate system. Assuming all lengths are in meters, calculate the potential of the following points: A (3,3) and B (0,2). How much work is needed to take a particle of charge 2 x 10^-5 C from A to B?

A flat surface of area 1.25 m2 is rotated through a uniform horizontal electric field of 5 N/C. What is the electric flux if the surface is (a) parallel and (b) perpendicular to the electric field?

A flat surface of area 1.25 m2 is rotated through a uniform horizontal electric field of 5 N/C. What is the electric flux if the surface is (a) parallel and (b) perpendicular to the electric field?

A point particle of charge 2.5 x 10^9 C and a mass of 3.65 x 10^-7 kg in uniform electric field directed to the right. It is released from rest and moves to the right. It is released from rest and moves to the right. After it has traveled 1.45 m, its speed is 35 m/s. Find,

a) work done on the particle

b) change in the electric potential energy of the particle

A uniform electric field E = 5000 N/C passing through a flat square area A = 2 m2. Determine the electric flux. Theta = 60 degrees ( the angle between the electric field direction and a line drawn perpendicular to the area)

A uniform electric field E = 8000 N/C passing through a flat square area A = 10 m2. Determine the electric flux.