Term
| Because the formule for pressure is p=f/a, calculate the pressure exerted by 10n on an area of 1m3 |
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Definition
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Term
| How does the air inside a container exert pressure on the wall of the container |
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Definition
| Pressure is caused by the force exerted by lots of collisions between the fast moving air particles and the container walls |
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Term
| why does a solid expand when heated? |
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Definition
| Heat causes the particles of the solid to have higher kinetic energy which causes the particles to vibrate with each other more vigorously, making the gaps between particles larger and expanding the solid |
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Term
| Because the formule for heat capacity is Q=mc^T, find how much energy it takes to heat a copper kettle by 1* when the kettle has a mass of 3kg and a heat capacity of 380jkg |
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Definition
Q=mc^T
=3.5 x 380 x 1
=1330j |
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Term
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Definition
| Brownian motion is the random movement of microscopic particles suspended in a liquid or gas, caused by collisions with molecules of the surrounding medium |
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