subject
Physics, 31.08.2019 00:10 jeonkara

In a supernova explosion, the iron core of a heavy star collapses to form a neutron star. assume the radius of the iron core of the star is rcore 3000 km, and the radius of the neutron star is rns 10 km. if the mass of the collapsing core is m - 1.4 msun (msun - 1 10su kg) and before the collapse the star completes a turn on its axis once every 30 days, a) what is the period of rotation of the neutron star after the collapse? , and b) what are the rotational kinetic energies before and after the collapse?

ansver
Answers: 3

Another question on Physics

question
Physics, 22.06.2019 04:30
The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.
Answers: 1
question
Physics, 22.06.2019 05:10
Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.
Answers: 3
question
Physics, 22.06.2019 10:30
You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?
Answers: 2
question
Physics, 22.06.2019 13:00
Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.
Answers: 1
You know the right answer?
In a supernova explosion, the iron core of a heavy star collapses to form a neutron star. assume the...
Questions
question
Mathematics, 28.05.2021 01:00
question
English, 28.05.2021 01:00
question
Mathematics, 28.05.2021 01:00
question
Mathematics, 28.05.2021 01:00
Questions on the website: 13722359