Physics, 14.12.2020 17:30 anaroles04
3. A marble with 0.02 kg mass is moving towards right with a velocity of 20 cmys, makes a head on collision with a second marble with a mass of 0.02 kg which is moving
towards left with a velocity of 10 cms. After collision the 1st marble moving towards left with a velocity of 10 CM/s, and what is the velocity of 2nd marble after collision?
10 cm/s Left
10 cm/s Right
20 cm/s Right
30 cm/s Right
Answers: 2
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A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.
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Physics, 22.06.2019 07:00
World class speed skaters can skate a 3,000-m course in about 4 minutes.what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s
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The mass of a bowling ball is 10 kg and the mass of a ping pong ball is 0.015 kg. if the two objects are 5 meters apart, what is the gravitational force ?
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Physics, 22.06.2019 16:00
The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?
Answers: 3
3. A marble with 0.02 kg mass is moving towards right with a velocity of 20 cmys, makes a head on co...
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