Rounded to the nearest whole number, how many protons are in an atom of krypton?

a 36
b 48
c 84
d 120

Ascientist is tracking an object orbiting the sun that is found between mars and jupiter. in order to classify the object as an asteroid, it must be at least

If the speed of a particle triples ,by what factor does its kinetic energy increase?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.