47. A ball is thrown directly downward with an initial speed of 8.00 m/s, from a height of 30.0 m. after what time interval does it strike the ground?

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A: Let's find time to take 90% of the lead to decay.

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Q: ind the half-life of a radioact

A: Given that: Rate = 12 %

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Q: 3. What is the velocity after 7 seconds?

A: Explanation of the answer is as follows

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A: Let A0 be the initial population and k be the growth rate.A0 = 1174k = 6.5%  = 0.065

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A: Follow the procedure given below.

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Q: Ifthe population of bacteria in a certain region triples in 15 days. In how many days will be four…

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