A student is at rest on a stool that may freely spin about its central axis of rotation. As the stool spins, the student holds onto two dumbbells as the stool spins at an angular speed of 1.2 rad/s with the studentās arms completely stretched out from the studentās body. At this instant, the student-dumbbell system has rotational inertia of 6 kgā
m^2. The student then brings their arms close to their body, and rotational inertia of the student-dumbbell system is changed to 2 kgā
m^2.
What is the new angular speed of the student?
A) 0.4 rad/s B) 1.2 rad/s C) 3.6 rad/s D) 7.2 rad/s
Answers: 3
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On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( Ļ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?
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1.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the mass defect of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 2.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 3.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy per nucleon of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev
Answers: 3
A student is at rest on a stool that may freely spin about its central axis of rotation. As the stoo...
Mathematics, 24.06.2021 18:50
Mathematics, 24.06.2021 18:50
Mathematics, 24.06.2021 18:50