Physics, 05.03.2021 19:30 palcochran1313
A skateboarder initially has 5 kJ of kinetic energy. As she freewheels along a flat section of path, she does 400 J of work against friction and air resistance. Calculate her final kinetic energy.
Answers: 2
Physics, 22.06.2019 18:50
8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.
Answers: 3
Physics, 22.06.2019 23:50
Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency
Answers: 2
Physics, 23.06.2019 11:00
An astronaut on the moon throws a baseball upward. the asatronaut is 6ft, 6in. tall, and the initial velocity of the ball is 30ft per second. the heigh s of the ball in feet is given by the equation s = -2.7^2 + 30t + 6.5, where t is the number of seconds after the ball was thrown. after how many seconds is the ball 16ft above the moon's surface?
Answers: 2
Physics, 23.06.2019 13:30
Explain how waste energy is produced when an inefficient lightbulb converts electrical energy into radiant energy.
Answers: 2
A skateboarder initially has 5 kJ of kinetic energy. As she freewheels along a flat section of path,...
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