Physics, 03.12.2019 20:31 liddopiink1
Calculate the density of a neutron star with a radius 1.05 x10^4 m, assuming the mass is distributed uniformly. treat the neutron star as a giant ucleaus and consider the mass of a nucleon 1.675 x 10^-27 kg. your answer should be in the form of n x 10^17 kg/m^3. enter onlt the number n with teo decimal places, do not enter unit.
Answers: 3
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 15:10
Suppose that f : rn β rm and that a β k, where k is a connected subset of rn . suppose further that for each x β k there exists a Ξ΄x > 0 such that f(x) = f(y) for all y β bΞ΄x (x). prove that f is constant on k; that is, f(x) = f(a) for all x β k
Answers: 1
Physics, 23.06.2019 00:30
Why is no-till farming more sustainable than many traditional methods of farming
Answers: 3
Calculate the density of a neutron star with a radius 1.05 x10^4 m, assuming the mass is distributed...
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