Conduction can occur within a single substance, but parts of the substance must have which property?
a. different temperatures
b.) different textures
c.) different particle sizes
d.) different colors

Which of the following is an example of motion in two dimensions?

If forces acting on an object are unbalanced. true or false

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)