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Physics, 21.06.2019 20:30
Asmall metal bar, whose initial temperature was 10Β° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70Β° c if it is known that its temperature increases 2Β° during the first second? (the boiling temperature for water is 100Β° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98Β° c? (round your answer to one decimal place.)
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Physics, 22.06.2019 05:30
Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30Β° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n
Answers: 2
Physics, 22.06.2019 15:00
Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive
Answers: 2
Wegener developed he hypothesis that earth's landmasses had once been fused together, and hen slowly...
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