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3.The body with a volume of 300 cm3 is immersed in a liquid. Calculate the density of the liquid in which the body is immersed, if it is affected by an upthrust force of 2.7 N.
4.Determine the thrust force applied to the car, if the distance traveled by it 200 m and work done by engine is equal to 500 kJ.
5.What potential energy relative to the Earth has a hammer with the mass of 1.5 kg at a height of 80 cm?
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