Physics, 19.07.2020 15:01, lberries08
An electric field around two charged objects is shown.
What are the charges of objects X and Y?
O X: negative
Y positive
O X: positive
Y positive
O X: negative
Y negative
O X: positive
Y: negative
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Y
Answers: 2
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Oxygen and hydrogen gas are at the same temperature t. what is the ratio of kinetic energies of oxygen molecule and hydrogen molecule if oxygen is 16 times heavier than hydrogen.
Answers: 3
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Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?
Answers: 2
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What is the efficiency of an engine that does 80 j of work and exhausts 320 j of heat while taking in 400 j of heat ? a. 10% b. 20% c. 80% d. 25%
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An electric field around two charged objects is shown.
What are the charges of objects X and Y?
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