A spaceship of titanium-devouring little green people has found a perfectly spherical asteroid. A narrow trial shaft was bored from point A on its surface to the centre O of the asteroid. This confirmed that the whole asteroid is made ofhomogeneous titanium. At that point, an accident occurred when one of the little green men fell off the surface of the asteroid into the trial shaft. He fell, without any braking, until he reached O, when he died on impact. However, work continued and the little green men started secret excavation of the titanium, in the course of which they formed a spherical cavity of diameter AO inside the asteroid, as illustrated in the figure. Then a second accident occurred-Another little green man similarly fell from point A to point O, and died. The ratio of the impact speeds of the first green person centre to second green person is Assignment no. 17

Q: A small vegetable shop use the following electric appliances: (1) Two Air Conditioner of rating 1600…

A:

Q: Take a boat with a mass of 1.5 kg and lift it to a height of 2m. Compute the amount of work done.

A: Given:Mass,m=1.5 kgHeight,h=2mGravitational acceleration,g=9.81 m/s2Now,Work done,wW=Fdcosθ…

Q: Q2: The boat in Fig.2 is traveling at 40km/h. The rope to tow the parasail is 150m long. At the…

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A: The four physical quantities that are universally conserved are

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Q: Answer in exact form and decimal.

A: Given:

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.