Physics, 01.07.2019 22:30 xoxolovezzz7181
Acertain gasoline engine has an efficiency of 30%; that is, it converts into useful work 30% of the heat generated by burning a fuel. (a) if the engine consumes 0.80 l/h of a gasoline with a heating value of 3: 25 104 kj/l, how much power does it provide? express the answer both in kw and horsepower. (b) suppose the fuel is changed to include 10% ethanol by volume. the heating value of ethanol is approximately 2: 34 104 kj/l and volumes of gasoline and ethanol may be assumed additive. at what rate (l/h) does the fuel mixture have to be consumed to produce the same power as gasoline?
Answers: 3
Physics, 21.06.2019 16:30
In this experiment, you will use a track, a toy car, and some washers to explore newton’s first two laws of motion. you will make observations and collect data regarding the motion of these objects. in the space below, write a general scientific question that you will answer by doing this experiment.
Answers: 1
Physics, 21.06.2019 20:20
Ateam of astronauts is on a mission to land on and explore a large asteroid. in addition to collecting samples and performing experiments, one of their tasks is to demonstrate the concept of the escape speed by throwing rocks straight up at various initial speeds. with what minimum initial speed vesc will the rocks need to be thrown in order for them never to "fall" back to the asteroid? assume that the asteroid is approximately spherical, with an average density p 3.84 x108 g/m3 and volume v 2.17 x 1012 m3 recall that the universal gravitational constant is g 6.67 x 10-11 n m2/kg2
Answers: 2
Physics, 21.06.2019 22:10
How would doubling the made of an object change the objects potential energy
Answers: 2
Physics, 22.06.2019 02:00
Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?
Answers: 3
Acertain gasoline engine has an efficiency of 30%; that is, it converts into useful work 30% of the...
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