How many neutrons does carbon have

How would your weight change on the surface of an earth sized planet whose mass was greater than earths? why?

A tiger leaps horizontally from a 5.9 m high rock with a speed of 4.1 m/s. how far from the base of the rock will she land?

What type of force is required to put a golf ball in motion?

A particle travels 15 times around a 10-cm radius circle in 42 seconds. what is the average speed (in m/s) of the particle?

The decomposition of water into hydrogen gas h2 and oxygen gas o2 can be moldled by the balanced chemical equation

Objects can be accelerating and traveling at constant velocity at the same time. True or False

What kind of star gives rise to a type i supernova? a. white dwarf stars b. massive main sequence stars c. red giant stars?

Example of an object in motion

A proton and an alpha particle are momentarily at rest at a distance r from each other. They then begin to move apart. Find the speed of the proton by the time the distance between the proton and the alpha particle doubles.

Why is it a good idea to extend your bare hand forward when you are getting ready to catch a fast-moving baseball? a. So you can catch the ball with a stiff arm, increasing the time to slow the ball thus deceasing the force. b.