Giant and supergiant stars are rare because

A worker does 25 J of work lifting a bucket, then sets the bucket back down in the same place. What is the total net work done on the bucket? a. - 25 J c. 25 J b. 0 J d. 50 J

Decide which of the following sports can be the most beneficial in achieving cardiovascular

A ball is thrown upward from the top of a 25.0 m tall building. The ball's initial speed is 12.0 m/sec. At the same instant, a person is running on the ground at a distance of 31.0 m from the building.

He has 54 cds and every box has 9 cds. how many boxes are in 54 cds?

You're at rest in a hammock when a hungry mosquito sees an opportunity for lunch. A mild 2 m/s breeze is blowing.

If an atom has a mass number of 23, which of the following is always true? The number of protons in the nucleus does not equal the number of neutrons. The atomic number is less than 11. The atom is not an isotope.

What does the law of conservation of energy say

How many elements are in the lanthanide series?

Photon energy is proportional to which of the following. a. speed of light in a vacuum. B frequency of the light emitting the photon. C intensity of the light emmitting the photon. D wavelegnth of light emmitting thr photon.

Each half of earth surface is called