Other Physics Answers

A +2.00 nC point charge is at the origin, and a second -5.00 nC point charge is on the xaxis at x = 0.800 m.

a) Find the electric field (magnitude and direction) at each of the following points on the xaxis: i) x = 0.200 m; ii) x = 1.20 m; iii) x = -0.200 m.

b) Find the net electric force that the two charges would exert on the electron placed at

each point in part (a).

A particle has charge -3.00nC.

a) Find the magnitude and direction of the electric field due to this particle at a point 0.250m

directly above it.

b) At what distance from this particle does its electric field have a magnitude of 12.0 N/C?

Two point charges are placed as follows: charge q1 = -1.50 nC is at y = +6.00 m and charge

q2 = +3.20 nC is at the origin. What is the total force (magnitude and direction) exerted by

these two charges on a negative point charge q3 = -5.00 nC located at (2.00 m, -4.00 m)?

Two equal positive point charges 𝑞1 and 𝑞2 = 4.0 µC interact with point charge Q= 5.0 µC. Find the magnitude and direction of the net force on Q.

An airplane propeller is rotating at 1900 rev/min.

(a) Compute the angular velocity in rad/s.

(b) How long in seconds does it take for the propeller to turn through 350 degrees?

A cyclotron for accelerating protons has a maximum radius of 0.700 m and has a magnetic field of 0.200 T.

(A) what is the cyclotron frequency?

(B)what is kinetic energy of the protons when they emerge?

Lying along the y-axis is a long, rigid wire which carries an 8.0 A current flowing in the positive direction.

(A) A 0.20 T constant magnetic field is directed along positive x-axis, find the magnetic force per unit length on the wire.

(B) If a 0.20 T constant magnetic force is directed 45 degrees from the +x-axis towards the +y-axis, solve for the magnetic force per unit length of the wire.

What is acceleration

Ariel dropped a golf ball from her second story window. The ball starts from rest and hits the sidewalk 3.5 s later with a velocity of 15.0 m/s. Find the average acceleration of the golf ball.

Bold

Italic

Underline

1. Two conducting plates with a length of 1 m and a width of 0.5 m has polyethylene between them. What is the capacitance if the capacitor is 1 m high?