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The energy provided each hour with heat to the turbine in an electric power plant is 9.0x10^12 J. If 5.6x10^12 J of energy is exhausted each hour from the engine as heat, what is the efficiency of this heat engine?
a football spends a total of 5 seconds in the air.it reaches a peak height of 20 meters. how long does it takes to reach its peak height
Barometric pressure in the eye of a hurricane is 0.91atm (27.2 in of mercury). How does the level of the ocean surface under the eye compare with the level under the distant fair-weather region where the pressure is 1.0atm.
Compute the length of a pipe that has a fundamental frequency of 370 Hz for each of the following conditions. (Take the velocity of sound in air to be 343 m/s.) Assume the pipe is closed at one end.
A gass has 100 J of energy in the form of heat is transfered to a system and the system does 150 J of work, what is the change in the internal energy of the system
People who suffer from cataracts may have the lenses in their eyes replaced by artificial lenses. what is the refractive power of the glasses she will need to see the object clearly
Explain Poiseuille's law and its various components in a paragraph and give an example of this in the human body.(Hint: use flow rate, viscosity, radius, pressure, Length, resistance, and pressure gradient to answer the question)
Assuming a constant pressure gradient, if blood flow is reduced by 74%, by what factor is a blood vessel decreased in radius
An ideal gas has a density of 1.78kg/m^3 is contained in avolume of 44.8*10^-3 m^3. The temperature of the gas is 273K. What is the root mean velocity of the molecules
The star Sirius has a surface temperature of 9750 K and aradius 2.4 times larger than the Sun's. What is the ratio of the flux (energy per square meter persecond) emitted from the surface of Sirius to the flux emittedfrom the surface of the Sun?
In measuring an RL circuit, you find that the total resistance of the circuit is 60 ohms and that t1/2 is 0.000836 seconds. Find the inductance of the circuit
A short, thin rod of length 2.5 cm has charge distributed uniformly along its length. What is the value of the linear charge density of the rod
a charge of 120 microc is at the center of a cube of edge 80.0 cm. no other charges are nearby.a find the total flux
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