A small, 3 kg weight is moved from 5 m from the ground to 8 m. What is the change in potential energy?

Julian is late to class and sees a list on the board: - are explanations of observations and hypotheses - are based on many experiments - have been revised over time - can be used to predict what may be expected in the future what is julian's class

Astronaut rachel leaves earth in a spaceship at a speed of 0.960c relative to an observer on earth. rachel's destination is a star system 14.4 light-years away (one light-year is the distance light travels in one year).

What would be a good reason to increase friction between surfaces?

If you cut across the diameter of a pie, what part are you cutting

The milliliter is a meter unit for

A transverse wave on a rope is given by y (x, t) = (0.750cm) cos (π[ (0.400cm-1) x + (250s-1) t]). find the period

Which best describes why a physical change differs from a chemical change? A. A physical change predicts the behavior of a substance when in a reaction, whereas a chemical change is used to identify characteristics of a substance. B.

You are watching children play a game of tug-o-war with an old plastic clothesline. The two teams are pulling at opposite ends of the cord and each team is trying to drag the other team into a mud puddle that lies between them.

What is the rate at which electrical energy is converted to another form of energy called?

A person gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. The cart travels forward along the floor, gradually slowing as it moves.