What studies outer space, the solar system and objects in it

What voltage would produce a current of 100A through an aluminum wire that has a resistance of 3.44x10^-4 ohm?

About light and energy

Why it is important to eat a full healthy meal before an afternoon of playing sports?

Defination of centre of curvature of a lens.

The speed of a motorcycle at a particular moment is it's average speed or is instantaneous speed?

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?