The speed of light in amber is 1.94*10^8 m/s. What is the index
of refraction for amber?
(No unit)

What is a subatomic particle with a negative charge and very little mass?

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?

You throw a baseball directly upward at time =0 at an initial speed of 14.9 m/s. what is the maximum height the ball reaches above where it leaves your hand? ignore air resistance and take =9.80 m/s2.