How do you best describe hypothesis? A. a carefully researched answer

B. a qualitative control

C. the collection of data

D. a possible answer to a question informed by observations

When you lift a book of the ground to your desk, what kind of work do you do, negative or positive? by lifting the book what do you change? does the book gain or loose energy? what kind of energy?

Which of the following laws best define this statement? the total amount of energy in a closed system stays the same.

In a game of egg-toss, you and a partner are throwing an egg back and forth trying not to break it. Given your knowledge of momentum, what hint could you give to your partner to keep the force of impact on the egg as low as possible?

When AC is changed into DC to charge a laptop or phone, is the resulting voltage perfectly constant? A. Yes B. No, but it can be made pretty close C. No, in fact sometime it's negative

What would happen if your entire kitchen was connected in series circuit? How would preparing meals and cleaning up be different?

you often hear people particularly TV announcers talk about "high rate of speed" what do you think they mean according to the specifics of physics definitions what are they really saying

What is the value of x in the equation Ix - 3y = 30, when y = 15?

32. How much work is done pushing an 80 N box 2 m across ue surtout What work is done? a. 40 J c. 160 J b. 20 J d. 240 J

Which is a resource that the National Park Service manages? A. memorials B. wildlife refuges C. ecosystems D. endangered species

Write two examples (mathematical expression) of physical laws that change inversely with the square of the distance.