A cooper rod has length L and diameter D, its resistance is 1 ohm. The wire produced from rod has length 4L and its diameter is D/4. What is resistance of the produced wire?

If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity