I feel dvmb for asking this question but... help? Please?

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

If a balloon is taken outside on a very cold day, what will occur?

Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)