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Through a nuclear accident, 410m3 of emergency cooling water at 23C are injected into a reactor vessel where the reactor core is producing heat at the rate of 200 MW. If the water is allowed to boil at normal atmospheric pressure, how long will it take to boil the reactor dry?
Answer in seconds
A laser emits a monochromatic beam of wavelength λ, which is reflected normally from a plane mirror, receding at a speed v. What is the beat frequency between the incident and reflected light?
A rifle has a mass of 4.5 kg and it fires a bullet of mass 11.6 g at a muzzle speed of 820 m/s. What is the recoil speed of the rifle as the bullet leaves the gun barrel
Two power lines, each 260 meter in length, run parallel to each other with a separation of 35 centimeter. find the magnitude and direction of the magnetic force each exerts on the other
A 21.3 kg object is pushed down a 26.3 cm long inclined plane that makes an angle of 15.7 degrees with the horizontal at a constant velocity. If the coefficient of kinetic friction is 0.35, then what is the work done by friction on the object? Assume..
A transformer has an input coil with Nin = 200 turns and Nout = 850 turns. what is the voltage across the output circuit
A low-power laser used in a physics lab might have a power of 0.40 mW and a beam diameter of 2.6 mm. Calculate the average light intensity of the laser beam
A camper is trying to start a fire by focusing sunlight onto a piece of paper. The diameter of the sun is 1.39 × 109 m, What is the area of the sun's image on the paper
a block of mass 21.1 kg supported by a vertical massless cable is initially at rest. the block is then pulled upward
A farmer named Ben attempts to remove an 80-kg rock from his field. He applies a force of 789 N for 10 seconds but could not move the rock. How much work has he done
A baseball is hit at an angle of 27.5 degrees and just clears the right field fence 87 meters away. What was the overall initial velocity of the baseball
Two capacitors, one 12.0 µf and the other of unknown capacitance, are connected in parallel across a battery of EMF 9.0 V. What is the unknown capacitance
The chamber of a rock-tumbling machine is a hollow cylinder withmass 69 g and radius 7.1 cm. The chamberis closed off by end caps in the form of uniform circular diskseach of mass 22 g.
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