Table sugar is not a mineral because

()it is in crystal for
()it is made of more than one element
()it is not made by a geologic process
()its chemical composition is always changing

Why should seat belts not be mandatory quick plz

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.

Which two particles are found in the center of an atom