Is there any difference between antimatter, dark matter, dark energy, and degenerate matter?

A motorist travels 406 km during a 7.0 hr period. what was the average speed in km/hr and m/s

A plastic rod that has been charged to - 21 nc touches a metal sphere. afterward, the rod's charge is - 8 nc.

Which is a model that shows only the valence electrons of an atom? A. atomic model B. heliocentric model C. electron dot diagram D. Hertzsprung-Russell diagram

What does each letter stand for in the formula p=v x i?

Best summarizes the law of conservation of energy?

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?

Vector A makes equal angles with x, y and z axis. value of its components (in terms of magnitude of vector A will be?