In order for fusion to begin during the birth of a star, there needs to be a certain amount of A. mass. B. charge. C. density. D. volume.

The amount of light a star gives off is called its ...

What do we mean when we say the universe is expanding, and how does expansion lead to the idea of the big bang and our current estimate of the age of the universe?

The Richter scale measures the __ of an earthquake.

What conditions are necessary for our bodies to maintain homeostasis and function properly?

Belly-flop Bernie dives from atop a tall flagpole into a swimming pool below. His potential energy at the top is 7000 J (relative to the surface of the pool). What is his kinetic energy when his potential energy reduces to 1000 J?

What is the total number of atoms in the following formula? CaBr2 4 3 2 1

Object A with a mass of 500 kilograms hits stationary object B with a mass of 920 kilograms. If the collision is elastic, what happens after the collision? A) Both object A and object B move forward but with different velocities.

A young man walks daily through a gridded city section to visit his girlfriend, who lives m blocks East and nblocks North of where the young man resides.

Aliens from planet Moby have three alleles for skin color: R (red) W (white) and B (Blue). If all of these alleles are codominant and aliens on planet moby can only inherit two alleles for a gene, what are the six possible genotypes for skin color

The difference between two numbers is 15. When twice the smaller number is subtracted from three times the larger number, the difference is 58. What is the larger number?