Salted tea

Electricity and Magnetism Level 1

Say I have two identical cups of tea, with equal volume and temperature. I pour into one cup a spoonful of salt, and the other I leave untouched. I stir both cups with identical rods at the same rate.

After some time, predict which cup will have a lower temperature.

Note: Salt doesn't react chemically with tea. Assume the salt is the same temperature as the tea.

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Salted tea

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100 Day Summer Challenge

Salted tea

Image credit: Wikipedia PierreSelim

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.