Mathematics, 29.03.2021 16:00 bened48
7. The equation for radioactive decay is P = (0.5)/H, where P is the fraction of a substance with half-life H remainin
radioactive after a period of time, t. A given substance has a half-life of 3000 years. After t years, one sixth of th
original sample remains radioactive. Find t, to the nearest thousand years.
Answers: 1
Mathematics, 21.06.2019 12:30
One-third of the people from country a claim that they are from country b, and the rest admit they are from country a. one-fourth of the people from country claim that they are from country a, and the rest admit they are from country b. in a combined census of the two countries, one-half of the total claimed to be from a. what is the ratio of the populations of country a to that of country b.
Answers: 2
Mathematics, 21.06.2019 19:30
Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.
Answers: 1
Mathematics, 21.06.2019 20:30
Aswimming pool measures 22ft by 12ft and is 4ft deep. if the pool is being filled at 2.5 cubic ft per minute, how long will it take to fill the pool?
Answers: 1
7. The equation for radioactive decay is P = (0.5)/H, where P is the fraction of a substance with ha...
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Mathematics, 10.06.2020 11:57
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