Floor, initially moving with some initial velocity, accelerates until its momentum has increased by a factor of 3.83. By what factor has its kinetic energy increased? 

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

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)