Physics, 14.09.2019 11:30 kassandramarie16
The area of tibet is 1,230,000 km^2 . the average annual insolation (hours of equivalent full sunlight on a horizontal surface) is 3000 h. if one-half the area of tibet is covered with solar panels of 10% efficiency, how much electricity per year can be generated? what percentage of the world’s energy needs can be satisfied? (the total energy consumption of the world in 2007 was 500 ej.)
Answers: 1
Physics, 22.06.2019 18:10
A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.
Answers: 2
Physics, 22.06.2019 19:20
Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.
Answers: 1
Physics, 22.06.2019 22:30
Find v1, the speed of the fluid in the left end of the main pipe. express your answer in terms of h1, h2, g, and either a1 and a2 or γ, which is equal to a1a2.
Answers: 2
Physics, 23.06.2019 00:00
If water vapor with the mass of 35.0 grams is cooled and condensed into water in a closed system such as a closed glass jar, what is the mass of the water after the water vapor completely condenses? a) 34.5 grams b) 35.0 grams c) 35.5 grams d) the mass cannot be determined without knowing the volume
Answers: 2
The area of tibet is 1,230,000 km^2 . the average annual insolation (hours of equivalent full sunlig...
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