Who was the first man in orbit?
a. neil armstrong
b. yuri gagarin
c. john glenn<...
Answers: 1
Physics, 21.06.2019 21:30
The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?
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Physics, 22.06.2019 11:20
The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)
Answers: 3
Physics, 22.06.2019 11:20
How to tell if a molecule is polar or nonpolar with electronegativity
Answers: 2
History, 27.07.2019 11:30
Mathematics, 27.07.2019 11:30
Social Studies, 27.07.2019 11:30
Social Studies, 27.07.2019 11:30
Mathematics, 27.07.2019 11:30
Physics, 27.07.2019 11:30
Mathematics, 27.07.2019 11:30
Mathematics, 27.07.2019 11:30
Mathematics, 27.07.2019 11:30
Mathematics, 27.07.2019 11:30