What is term used to describe the buildup of electric change on an object the buildup of electric change on an object

How much work does a mother do if she lifts each of her twin babies upward 1 meter? Each baby weighs 90 newtons.

The rate at which work is done is called

What would increase the resistance of a copper wire? A. decreasing the wire's thickness B. decreasing the wire's temperature C. decreasing the wire's length

What is gravity's effect on two falling objects with different masses?

A tennis ball traveling horizontally at 22.0 m/s suddenly hits a vertical brick wall and bounces back with a horizontal velocity of 18.0 m/s

As part of a circus performance, a man is attempting to throw a dart into an apple which is dropped from an overhead platform. Upon release of the apple, the man has a reflex delay of 215 milliseconds before throwing the dart.

A train travels 90 kilometers in 1 hour, and then 82 kilometers in 5 hours. What is it's average speed?

3. A hydraulic lift is used to jack a 950-kg car 45 cm off the floor. The diameter of the output piston is 23 cm, and the input force is 375 N. a. What is the area of the input piston? (10pts) b.

An electric current in a metal consists of moving (A) Protons (B) neutrons (C) electrons

How does the idea of rotating disk in the nebular model explain certain observed celestial phenomena?