Physics, 31.07.2021 23:00 densliverdensentos
A drum of mass 100kg is rolled into the deck of a lorry 1.5m above a horizontal floor using a plank 4m long. calculate the work done against gravity during the process (g=10m/s)
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If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?
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Give an example in which the electrical energy changes to light energy
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Contrast the force of gravity between these pairs of objects: 1-kg mass and a 2-kg mass that are 1 m apart; a 1-kg mass and a 2-kg mass that are 2 m apart; and two 2=kg masses that are 1 m apart. i dont understand.
Answers: 3
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