Physics, 02.10.2019 01:00 emoreader3122
Suppose you have 50 grams of a radioactive isotope with a half-life of 2 years. how much of the isotope will you have after 4 years? 50 25 12.5 6.25 grams
Answers: 2
Physics, 22.06.2019 11:30
Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?
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Physics, 22.06.2019 15:50
If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?
Answers: 1
Physics, 22.06.2019 17:40
Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.
Answers: 1
Suppose you have 50 grams of a radioactive isotope with a half-life of 2 years. how much of the isot...
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