Physics, 26.01.2020 22:31 isabelvaldez123
Asample of a radioactive element has a mass of 80 g. how much parent and daughter materials are in the sample after two half-lives?
Answers: 3
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If the speed of a particle triples ,by what factor does its kinetic energy increase?
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Physics, 22.06.2019 06:30
Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)
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Physics, 22.06.2019 21:00
What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.
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Asample of a radioactive element has a mass of 80 g. how much parent and daughter materials are in t...
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