If one object has a positive charge and another has a negative charge, the object will be ...

A. Cancel

B. Attract

C. Mix

D. Repel

What fossil fuels produce a gas when that are burned that adds to the greenhouse effect

What causes interstellar dust and clouds to condense in the planets and stars

In a physics motion study, students established a frame of reference for measurements. Which of the following is their most likely choice? A. time since the beginning of the class period B. mass as a ratio to that of the same volume of water C.

Approximately how far is the sun from the center of the milky way galaxy?

Why do you think the velocity of the center of mass does not change

Are microwaves and radio waves faster or slower than other types of electromagnetic energy?

If you dive under-water, you notice an uncomfortable pressure on your eardrums due to the increased pressure. The human eardrum has an area of about 70 mm2 (7*10-5m2), and it can sustain a force of about 7 N without rupturing.

Why cant kinetic energy ever be greater than potential energy

For a stationary observer, when the source of a sound is moving, its pitch appears to change.

Give an example of each simple machine