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Home /Doubts and Solutions/CBSE/Class 11 Science

# CBSE Class 11 Science Free Doubts and Solutions

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## The minute hand of a watch is 1.5 cm long far does its tip move in 40 minutes

Asked by durgassonawane 21st July 2019, 5:27 PM

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## A ship of total mass m is anchored in the middle of a river and water is flowing with a constant velocity v. the horizontal component of the force exerted on the ship by the anchor chain is T. If the anchor chain suddenly breaks, determine the time required for the ship to attain a velocity equal to 0.5v ; assuming that the frictional resistance of the water is proportional to the velocity of the ship relative to water.

Asked by vidyavikram10 21st July 2019, 12:57 PM

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## Two train the moving on the same track. the velocity of first train and 72 km/h and the second is 36 km/h. If the 1st train behind the 2nd train, then the minimum distance between the trains such that they do not collide ( retardation of brakes of 1st train is 0.05 m/s^2) 1) 1000m 2) 500m 3) 100m 4) 3000m

Asked by kamlesh.chahal.2003 20th July 2019, 6:09 PM

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## A man can throw a stone to a maximum distance of 80m.the maximum height to which it will rise in meter,is

Asked by bhrjitu 20th July 2019, 3:32 PM

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## How can get the question and answers of NCERT books of Physics, Chemistry, Biology for I.Sc. (XI)?

Asked by shekhar2889 20th July 2019, 3:24 PM