Physics, 20.02.2020 08:45 fantasticratz2
Two trains, each having a speed of 35 km/h, are headed at each other on the same straight track. A bird that can fly 70 km/h flies off the front of one train when they are 70 km apart and heads directly for the other train. On reaching the other train it flies directly back to the first train, and so forth. (We have no idea why a bird would behave in this way.) What is the total distance the bird travels?
Answers: 3
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If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)
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Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.
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Physics, 22.06.2019 03:30
Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)
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Physics, 22.06.2019 07:00
Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount
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Two trains, each having a speed of 35 km/h, are headed at each other on the same straight track. A b...
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