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A coal-fired electric power plant has an overall efficiency of 35% and an output of 1,496 megawatts. How many terajoules (trillions of joules) of waste heat does it reject to the environment each day?
A centrifuge whose maximum rotation rate is 11,000 rev/min can be brought to rest in 3.00 s. What is the average angular acceleration of the centrifuge
The space shuttle is in a 250 mile high orbit. what are the shuttle's orbital period and speed
Cartesian coordinate system is characterized by three orthogonal unit vectors (orts) i, j, and k, which are parallel to the x-, y-, z-axis, respectively. What are the coordinates of these vectors
q1.a 8.0-m long wire with a mass of 10 g is under tension. a transverse wave for which frequency is 570 hz the
A 4.6mH toroidal inductor has 150 identical equally spaced coils. If it carries an 12.0A current, at what rate is the current in it changing
A hawk is flying horizontally at 17.0m/s in a straight line, 160 m above the ground. A mouse it has been carrying struggles free from its grasp. The hawk continues on its path at the same speed for 2.00s before attempting to retrieve its prey.
You are asked to design a spring that will give a 1000 kg satellite a speed of 3.20 m/s relative to an orbiting space shuttle. find What distance must the spring be compressed
A sphere of radius 20 cm and mass 1.8 kg starts fromrest and rolls without slipping down a 30 deg incline that is 10 mlong. Calculate its rotational speed when it reaches the bottom
Air (density = 1.29kg/m^3) passes over the top and bottom surfaces of an aircraft whose effective wing area is 75.5m2. what is the mass of the plane
A certain source of sound radiates uniformly in all directions in air. At a distance of 5m the sound level is 80 dB. The frequency is 440 Hz. What is the displacement amplitude at this distance
A pitcher throws a fastball horizontally at a speed of 150 km/h toward home plate, 18.4m away. If the batters combined reaction and swing times total 0.37s, how long can batter watch the ball after it has left the pitcher's hand before swinging? In t..
Two positive charges, one of magntude Q and the other of magnitude 2Q, and one negative charge of magnitude -Q are placed on a straight line, Find both the magnitude and direction of the net force on the positive charge on the left
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