Physics, 03.07.2019 12:30 SoccerHalo
The isotope samarium-151 decays into europium-151, with a half-life of around 96.6 years. a rock contains 5 grams of samarium-151 when it reaches its closure temperature, and it contains 0.625 grams when it is discovered. the time since the rock reached its closure temperature is ? years. when the rock was discovered, it had ? grams of europium-151.
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Asmall 12.00g plastic ball is suspended by a string in a uniform, horizontal electric field with a magnitude of 10^3 n/c. if the ball is in equilibrium when the string makes a 30 ° angle with the vertical, what is the net charge on the ball?
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The isotope samarium-151 decays into europium-151, with a half-life of around 96.6 years. a rock con...
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