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A community plans to build a facility to convert solar radiation to electrical power. They need 3.00 MW of power, and the system to be installed has an efficiency of 30.0% (that is, 30.0% of the solar energy incident on the surface is converted to useful energy that can power the community). What should be the effective area of a perfectly absorbing surface utilized in such an installation, assuming sunlight has a constant intensity of 1120W/m2?
A golfer hits a golf ball of mass 0.045kg the ball over some short trees. he hits the ball at an angle of 60 degreed to the horizontal, What is the change in momentum of the golf club
A 5 kgblock is placed near the top of a frictionless ramp, which makes an angle of30odegrees to the horizontal. Find the magnitude of the maximum compression of the spring
four charges q=4nC form a square, 20 cm on a side. what is the potential of electric field at the center of the square
A circular loop of wire of radius 18 cm moves at a speed of 6.6 m/s in the direction of a 0.13 T uniform magnetic field, What is the emf induced in the loop
Two planets are orbiting a star in a distant galaxy. The first hasa semimajor axis of 150 × 10^6 km, an eccentricity of 0.20,and a period of 1.0 Earth years. The second has a semimajor axis of 250 × 10^6 km, an eccentricity of 0.30, and a periodof..
A car with a mass of 2400 kg is traveling at a speed of 40.0 km/h on an icy road when it collides with a 10000 kg truck which was traveling toward the car with the speed of 18 km/h. Find the change in the kinetic energy of the system
The springs of a 1100 kg car compress 4.5 mm when its 68 kg driver gets into the driver's seat. what will be the frequency of vibrations
a helicopter flies over the arctic ice pack at a constant altitude towing an airborne 119-kg laser sensor that measures
the acceleration due to gravity on mars is 3.8 ms2.a if the curiosity rover on mars drops a tool from a height of 2.25
Explain how could he use technical, human and conceptual skills to maintain an environment that encourages innovation and professionalism among the virus hunters?
A wall clock has a minute hand with a length of 0.55 m and an hour hand with a length of 0.26 m. Take the center of the clock as the origin, and use a Cartesian coordinate system with the positive x axis pointing to 3 o'clock and the positive y ax..
Two scales on a voltmeter measure voltages up to 20.0 V and 28.0 V, respectively. Determine the coil resistance
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