Friction heats up the brake pads of a car as it stops. what is this an example of?

Which of the choices is not a statement or direct application of the second law of thermodynamics? There are no 100% efficient heat engines. Heat energy naturally transfers from a high temperature substance to a low temperature substance.

What evidence did sir issac newton use to support his particle explanation of light

How electrical energy can be used by an electrical toothbrush that is plugged in but not running?

Express 1010 miners in examiners. Answer in units of Eminer.

Which statement best compares an asteroid with Earth?

Through which medium would EM waves travel the fastest? A. The Ocean B. The Atmosphere C. Rocks

Average mass of a toy car (small, hot wheels) ?

A cannon directed straight upward launches a ball with an initial speed v. The ball reaches a maximum height h in a time t. Then, the same cannon is used to launch a second ball straight upward at a speed 2v.

Does the sun fuse hydrogen into helium or vice versa?

Is it possible to put a distance versus time graph to be universal go mine