Energy Questions

• Are there different types of black holes?
• Can momentum be hidden to human eyes like how kinetic energy can be hidden as heat?
• Can you go fast enough to get enough mass to become a black hole?
• How can a material at a certain temperature have all of its molecules at the same energy?
• How can we travel to the past?
• How do free energy machines work?
• How do levers create energy if the conservation of energy does not allow energy to be created?
• How does quantum theory allow a rock to turn suddenly into a duck?
• How much money do I save by recharging my cell phone at work?
• Is a black hole a 2D or a 3D object?
• Is ionizing radiation always harmful?
• Light has no mass so it also has no energy according to Einstein, but how can sunlight warm the earth without energy?
• Since gravity is unlimited, can we use it as an infinite energy source?
• What are some other ways to save energy in a car besides turning off the air conditioner and rolling down the windows?
• What makes heat rise?
• When does the breaking of chemical bonds release energy?
• Why do diamonds last forever?
• Why is light pure energy?
• Why is mass conserved in chemical reactions?