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An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?
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Who was the first scientist to measure speed as distance over time?
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Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.
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Which sound characteristic is not affected by the relative motion of an object
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Trong từ trường đều có cường độ H = 1000A/m, xét một diện tích phẳng S = 50cm2, sao cho các đường sứ...
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