How much force is required (in Newton's) to accelerate a 4-kg skateboard, along with its 46-kg rider, at 3m/s2?

Define, gravitational acceleration

A hollow conducting sphere has an inner radius of r1 = 0.19 m and an outer radius of r2 = 0.34 m. The sphere has a net charge of Q = 1.8E-06 C. What is the field E1 in N/C 1 m from the sphere's outer surface?

Which meaning of a word refers to exactly what it is

Wave 1 carries more energy than Wave 2. Wave 3 carries more energy than Wave 2. Keeping speed constant, the greatest amount of energy is carried by a wave with-A a low amplitude and a high frequency. B a low amplitude and a low frequency.

Which one of the following statements concerning superconductors is false? A constant current can be maintained in a superconducting ring for several years without an emf. Superconductors are perfect conductors.

What is it called when you connect an object to earth with a conductor

Why is venus the hottest planet in the solar system

Which of the following is an example of an electromagnetic wave? A. ripples on a lake B. the honking of a car horn C. the light from a neon sign D. aftershocks from an earthquake

How fast can we travel in space with current technology?

How would the tides on earth be different if the moon revolved around the earth in 15 days instead of 30 days