Friction and Heat

Classical Mechanics Level pending

A block sliding along a tabletop is brought to rest by friction. If the friction does 50 J of work on the block in the process and the internal energy of the block increases by 30 J, how much heat (in Joules) is released to the block's surroundings?

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Friction and Heat

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100 Day Summer Challenge

Friction and Heat

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, conceptual quizzes.

Our wiki is made for math and science

Master advanced concepts through explanations, examples, and problems from the community.

Used and loved by 4 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

Master advanced concepts through explanations,
examples, and problems from the community.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Master advanced concepts through explanations,
examples, and problems from the community.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.