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6 Cards in this Set
- Front
- Back
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Conservation of mass
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cookies, the total weight of the ingredients in each recipe will be equal to the total weight of the resulting cookies or cake, plus a small amount of steam
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conservation of fundamental particles
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there must always be the same number of atoms of each element at the beginning and end of a chemical reaction, one type can be changed into another, but the total number always stays the same
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conservation of charge
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as tennis shoes get scuffed across carpet, that action is not creating an electrical charge. The rubber on the bottom of the shoes is stealing electrons from the wool or nylon in the carpet. The shoes and the person wearing them are left with a negative charge from the extra electrons taken up during the scuffing, while the carpet has a positive charge
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linear momentum
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an object's mass times its velocity, measures the amount of motion in a straight line. Astronauts decide to blow things up. One explosion sends two equal fragments off in opposite directions at 3/4 the speed of light, since the total momentum to start with was zero, and the edning momentums cancel out, momentum is clearly conserved
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Conservation of angular momentum
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mass X speed X radius (center of orbit) Ice skaters pull their legs close together and their arms in tight against their torsos and spin at a much faster speed
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Conservation of energy
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energy can neither be created nor destroyed, First Law of Thermodynamics, is more universal than Newton's Second Law because Newton's Second Law has had to be modified.
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