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The electric output of a power plant is 700MW. Cooling water flows during the power plant at the rate 0.500 x 10^8L/hr. The cooling water enters the plant at 12.0ºC and exits at 27.0ºC.
What is the power plant's thermal efficiency?
A current of -3.70 A is located 5.51 cm along the x axis, that is, at the point (5.51,0.00) cm. A current of -6.15 A is located 4.08 cm along the y axis, Find the magnetic field at the origin
A 2.10-kg block is suspended from a spring with a spring constant of 480.0 N/m. What fraction of the original kinetic energy of the bullet appears as mechanical energy in the system of block-spring-bullet
Calculate the electric field(magnitude and direction) at the center of a square 52.5 on a side if one corner is occupied by a - 38.8 charge
Lonnie pitches a baseball of mass .20 kg. The ball arrives at home plate with a speed of 40 m/s and is batted straight back to Lonnie with a return speed of 60-m/s. If the bat is in contact with the ball for .050 s, what is the impulse experienced..
A 1.5 kg copper block is given an initial speed of3.00m/s on a rough horizantal surface. Because of friction, theblock finally comes to rest. what happens on the remaining energy
To verify her suspicion that a rock specimen is hollow, a geologist weighs the specimen in air and in water. What fraction of the specimen's apparent volume is solid
after hitting a long fly ball that goes over the right fielders head and lands in the outfield the batter decides to
Calculate the maximum current density in a lead wire of diameter 4 mm at a temperature of 4.2K if the wire is to remain superconducting. The relevant values for lead are Tc= 7.19k and Bc =6.39 x104 A/m . (note that the magnetic field in the wire is g..
In an adventure movie, a 65.0-kg stunt woman falls 7.80 m and lands in a huge air bag. Her speed just before she hit the air bag was 11.1 m/s. What is the total work done on the stunt woman during the fall
A diffraction grating has 4436 lines/cm. Light that contains all wavelengths between 447 and 650 nm shines on the grating. Calculate the width of the dark area
The middle C string on a piano is under a tension of 706 N. The period and wavelength of a wave on thisstring are 3.82 10-3 sand 1.26 m, respectively. Find the linear density of the string
A in-ground swimming pool has a dimensions of 20 meters long by 15 meter wide and 3.00 meter deep. What is the total force exerted on bottom of pool
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