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Suppose an anemometer mounted at a height of 10 m on a level field with tall grass shows an average windspeed of 6 m/s. a. Assuming Rayleigh statistics and standard conditions (150C and 1 atm), estimate the average wind power (W/m2 ) at a height of 80 m. b. Suppose a 1300 kW wind turbine with 60 m rotor diameter is located in those 80 m winds. Estimate the annual energy delivered (kWh/yr) if you assume the turbine has overall efficiency of 30%. c. What would the turbine's capacity factor be?
A block of mass m sits on a horizontal frictionless tabletop. It is connected by a light rope that passes over a light frictionless pully to a block of mass 5 kg that is suspended from the end of the rope. What is the mass m of the block on the tab..
A block of wood with volume V floats in waterwith 0.67V submerged.In oil the block floats with 0.85V of its volume submerged. Find the density of the wood. Find the density of the oil.
A 12.0-cm diameter loop of wire is initially oriented perpendicular to a 1.5-T magnetic filed. What is the average induced emf in the loop
A 1.80-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 6.00sin(2?t), Find the resonance angular frequency of the system
Calculate the moment of inertia and express the rotational partition function as a function of T.
Two forces are applied to a block of mass M = 14.0 kg that sits on a horizontal, frictionless table. One force Fs 1 has a magnitude of 10.0 N and is directed at an angle u1 equal to 37.0° from the x direction as labelled in Figure 4-27. As a result o..
a van de graaff generator has a dome of radius 2.0 m. a motor causes a charged insulating belt to travel continuously
Four identical springs support equally tghe weight of a 1300 kg car. the car driver goes over a speed bump, find the oscillation period
Two loudspeakers in a plane, 5 m apart, are playing the same frequency. If you stand 12 m in front of the plane of the speakers, What is the frequency of the sound
A 6.250 keV x-ray photon strikes a carbon atom and is scattered with a Compton scattering with one of the carbon’s electrons. The energy of the scattered photon is measured to be 6.175 keV. What is the wavelength of the scattered photon? During what ..
A 0.230- coffee cup at 19 is filled with 0.240 of brewed coffee at 97. The cup and the coffee come to thermal equilibrium at 79.If no heat is lost to the environment, what is specific heat of the cup material.
A uniform electric field exists in the region among two oppositely charged plane parallel plates. A proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate, 1.65cm distant from the fir..
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