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a. What is the amount of air passing per minute through the WTG swept area if the rotor radius is 40m, the air flux is 12 kg/((m^2)*(s^2)).
b. would the amount of air passing through change if the temperature changed on site with +7C degree? (Yes or No, in 1 max 2 sentences explain why).
A tangential force acts on the rim of a 2.0 kilogram disk-shaped wheel (0.50 m radius) and gives the wheel an angular acceleration of 4.8 rad/s2. neglect friction and find the magnitude of the force.
A small conductive rod of length 1.5 m moves with a constant velocity v=15 m/s in a direction parallel to a long wire carrying a current of 22 A. Calculate the electric potential induced across the rod
Two trains on separate tracks move toward each other. Train 1 has a speed of 125 km/h; train 2 a speed of 84.0 km/h. What is the frequency heard by the engineer on train 1
A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. How many revolutions per minute is the sample making
How much does it cost in dollars to watch the 5.25 hour-long coverage of the Super Bowl on a 130 Watt television set? Assume that one kWh electricity costs 9.90 cents
A sound source emits sounds of frequency 210 Hz that travel through still air at 340 m/s. This sound source moves with a speed of 75 m/s relative to still air toward a stationary listener.
Two water waves meet at the same point, one having a displacement above equilibrium of 17 cm, what is the resulting displacement above equilibrium
An ideal gas at 26.3°C and a pressure 1.80 105 Pa is in a container having a volume of 1.00 L. Determine the number of moles of gas in the container. Your response differs from the correct answer by more than 10%. Double check your calculations. m..
one of the most powerful cranes in the world operates in switzerland. it can slowly raise a load of m 6900 tonnes to a
question1a 4.7-g object moving to the right at 38 cms makes a flexible head-on collision with a 9.4-g object that is
If the accelerating voltage is doubled in the experiment, determine how much would the current in the Helmholtz coils have to be changed to keep the radius of the path electrons the same
A 6.9 cm diameter loop of wire is initiallyoriented perpendicular to a 1.4 T magnetic field. The loop is rotated so thatits plane is parallel to the field directionin 0.30 s.
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