- What is the smallest piece of an element?

Discover Questions

How fast is a star moving if its hydrogen absorption line is shifted by +0.06 nm from its normal rest wavelength of 656.20 nm? Factor the following as the difference of two squares. Be sure to factor completely.
Please explain
640-10t^2? Find the grade(alfa) in which x^2 + y^2=8 finds y^2=2x
Can someone help me? Simplify the given expression. Write the answer with positive exponents only.
Please Explain
2^2/(4a)^-2? If a star ship goes to a planet, could it stop in space, like park above the planet? Or would it have to orbit the planet and keep moving?