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1. Sodium-24 has a half-life of 15 hours. How much sodium-24 will remain in an 26.0 g sample after 60 hours?
Answers: 1
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Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?
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If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s
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An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.
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1. Sodium-24 has a half-life of 15 hours. How much sodium-24 will remain in an
26.0 g sample after...
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