A charge of 8.3 × 10-5 C is placed in an electric field with a strength of 5.7 × 10^5 N/C . If the electric potential energy of the charge is 85 J, what is the distance between the charge and the source of the electric field? Round your answer to the nearest tenth.

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)

Auniform solid cylinder with a radius of 10 cm and a mass of 3.0 kg is rotating about its center with an angular speed of 33.4 rpm. what is its kinetic energy?