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

There are weak or strong attractive forces between atoms of liquids with a high viscosity

Is the time in tennessee the same as florida

Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?