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A power plant having a carnot efficiency produces 1000 MW electric power from turbines that take in steam at 500K and reject water at 300K into a flowing river. The water downstream is 6.00 K warmer due to the output of the power plant. Determine the flow rate of the river?
The supertanker Globtik London has a mass of 220,000 metric tons when empty and it can carry up to 440,000 metric tons of oil when fully loaded. What is the draft of the fully loaded tanker
The G string of a guitar which should be 392 Hz is playing flat at 380 Hz. What percentage change in the tension of the wire is required so as to tune the string to 392 Hz
A playground is on the flat roof of a city school, 4.6 m above the street below (see figure). The vertical wall of the building is h = 6.10 m high, forming a 1.5-m-high railing around the playground. Find the vertical distance by which the ball cle..
Cell phone sends 1.25ghz magnetic waves. Field vector of the wave has a strength of 24 mv/m and points upward, Which direction does magnetic vector point
As a 1240-kg truck travels up a 15.4-m-high hill, the nonconservative forces of friction and the force generated by the engine do work on the truck. determine the change in the truck's kinetic energy
A uniform disk has a mass of 3.7 kg and a radius of 0.40 m. The disk is mounted on frictionless bearing and is used as a turntable. What is the final angular momentum of the system
A model rocket is fired vertically from rest. It has a net acceleration of 17.0 m/s2. How long after liftoff does the rocket return to the ground
At a distance of 13.0 km from a radio transmitter, the amplitude of the radiated electric field of the radio transmissions is measured to be 0.20 volts/meter. determine the total power emitted by the radio station
The current in an electro magnet connected to a 240 V line is 14.5A.At what rate must cooling water pass over the coils if the water temperature is to raise by no more than 7.50C ?
Assume that a honeybee is a sphere of diameter 1.000 cm with a charge of +49.0 pC uniformly spread over its surface. What is the magnitude of the net electrostatic force on the grain due to the bee
assuming the acceleration is constant throughout each time interval (but not necessarily the same in both intervals), what distance does the shuttle travel during the interval from 7.00 s to 1.00 min.
An express subway train passes through an underground station. It enters at t = 0 with an initial velocity of 18.5 m/s and decelerates at a rate of 0.150 m/s2 as it goes through. How fast is it going when the nose leaves the station
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