Determinați numărul protonilor și cel al neutronilor în nucleul atomului
de beriliu .
De...
Physics, 07.05.2020 12:57 blondieb1722
Determinați numărul protonilor și cel al neutronilor în nucleul atomului
de beriliu .
Determinaţi structura nucleelor izotopilor de uraniu și de toriu Care forţe se numesc forţe nucleare. Enumeraţi particularităţile forţelor nucleare
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Physics, 22.06.2019 06:30
2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.
Answers: 2
Physics, 22.06.2019 16:30
The air in an automobile tire with a volume of 2.60 ft3 is at 70°f and 21 psig. determine the amount of air that must be added to raise the pressure to the recommended value of 30 psig. assume the atmospheric pressure to be 14.6 psia and the temperature and the volume to remain constant. the gas constant of air is ru = 53.34ft⋅lbflbm⋅r(1 psia144 lbf/ft2) = 0.3704 psia⋅ft3lbm⋅r the amount of air that must be added to raise the pressure is lbm
Answers: 3
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