You go rock climbing with a pack that weighs 70 Newtons, and you reach a height of 30 meters. How much work did you do to lift your pack?

Why is my autistic sister closer. to a friend of ours than she is me?

On a large scale, matter is mostly neutral. What is true of electric forces on a large scale? a) They are exactly zero. b) They are mostly negative. c) They are close to zero. d) They are mostly positive.

As a 2.0-kg block travels around a 0.50-m radius circle it has an angular speed of 12 rad/s. The circle is parallel to the xy plane and is centered on the z axis, 0.75 m from the origin. The magnitude of its angular momentum around the origin is:

Calculate the thermal energy in a cubic meter of air at room temperature and one atmosphere. Is it possible to extract this energy to charge your mobile phone? Explain.

What is Gauss's law?

How many joules are expended by a 70 kg man climbing up 6m of stairway? How much work is done if the climbing takes place on the surface of the moon? (Assume that the acceleration due to gravity on the moon's surface is 1.6 m/s2

A baseball flying through the air has kinetic energy because of its motion. true or false?

How many poles does Jupiter's magnetosphere have? a. 2 c. 8 b. 4 d. 9

Which describes nuclear fusion? The nuclei of two atoms combine to form a larger nucleus. The nucleus of one atom splits to form two smaller nuclei. The electrons of two atoms combine to form a cluster of electrons.

In a class debate, a student argues that the big bang theory is "just a theory." What is most likely to be this student's understanding of scientific theories? A. Theories agree with observations of nature. B. Theories are just guesses. C.