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An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3
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5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.
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Physics, 22.06.2019 08:00
Which notation is used to represent an alpha particle? a. b. c. d.
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Có q=2*10^(-7) đặt trong điện trường của một diện tích điểm Q, F=5(mN) tính cường độ điện trường tại...
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