What’s the combination of all forces acting on an object

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch

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)

You can decrease the resistance of a length of wire by