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Physics, 23.06.2019 13:30
How many joules will be lost by 150 g of water if it is cooled from 90oc to 5oc?
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Physics, 23.06.2019 22:00
What statement describes the process of solar nuclear fusion? hydrogen atoms are fused into deuterium, then helium-3, then helium-4, each step giving off large amounts of energy. hydrogen molecules are fused together and become oxygen molecules, giving off large amounts of energy. helium molecules are fused together and become hydrogen molecules, giving off large amounts of energy. hydrogen atoms are fused into deuterium, then helium-4, then back into hydrogen, each step giving off large amounts of energy.
Answers: 2
Physics, 23.06.2019 23:10
Consider two closed systems a and b. system a contains 3000 kj of thermal energy at 20°c, whereas system b contains 200 kj of thermal energy at 50°c. now the systems are brought into contact with each other. will the heat transfer occur from system a to system b?
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Physics, 24.06.2019 00:30
What occurred during the cenozoic era? a. a meteor impact b. the ice age c. dinosaur extinction d. plants and animals first colonize on land
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