Physics, 06.10.2021 19:10 cduckworth7558
Two discs are rotating about an axis as shown in the figure. The moment of inertia
of the right disc is 2 kg m2 and it rotates with angular speed of 2000 rpm. The
moment of inertia of the left disc is 5 kg m2 and it rotates in the opposite direction
with angular speed of 100 rpm. The discs are suddenly clamped together.
Determine the final common angular speed of the clamped discs.
Answers: 2
Physics, 22.06.2019 00:30
Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass
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Physics, 22.06.2019 09:30
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 ( Ï= 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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Physics, 22.06.2019 12:20
Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earthâs electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earthâs electric field a feasible means of flight? why or why not?
Answers: 2
Physics, 22.06.2019 20:00
Awave that is traveling fast can be said to have a high a. frequency b. speed c. wavelength d. amplitude e. period f. none of these
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Two discs are rotating about an axis as shown in the figure. The moment of inertia
of the right di...
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