Physics, 26.09.2019 16:30 westlakebuddy7884
Askater extends her arms horizontally, holding a 5-kg mass in each hand. she is rotating about a vertical axis with an angular velocity of one revolution per second. if she drops her hands to her sides, what will the final angular velocity (in rev/s) be if her moment of inertia remains approximately constant at 5 kg · m2, and the distance of the masses from the axis changes from 1 m to .1 m?
a. 6
b. 3
c. 9
d. 4
e. 7
Answers: 2
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A40.0 l tank of ammonia has a pressure of 12.7 kpa. calculate the. volume of the ammonia if it’s pressure is changed to 8.4 kpa while its temperature remains constant.
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Aparticle of mass m is placed in a one-dimensional box of length l. the box is so small that the particle’s motion is relativistic, so that e p2/2m is not valid. (a) derive an expression for the energy levels of the particle using the relativistic energy–momentum relation and the quantization of momentum that derives from connement. (b) if the particle is an electron in a box of length l 1.00 1012 m, nd its lowest possible kinetic energy. by what percent is the nonrelativistic formula for the energy in error?
Answers: 1
Askater extends her arms horizontally, holding a 5-kg mass in each hand. she is rotating about a ver...
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