Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1.4 mm. Conductor B is a hollow tube of outside diameter 2.2 mm and inside diameter 1.0 mm. What is the resistance ratio RA/RB, measured between their ends?

The force will determine the acceleration.

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

Suppose that a mass of 2 kg is attached a spring whose spring constant is 50. the system is damped such that b = 12 . the mass is set in motion with an initial velocity of -8 m/s at a position 0 meters from equilibrium. set up and solve a differential equation that models this motion. write your solution in the form a cos ( ω t − α ) where α is a positive number. use your solution to fill in the information below: what is the amplitude of the motion? what is the value of ω ? what is the phase shift?