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A liquid is flowing through a horizontal pipe whose radius is 1.80 x 10-2 m. The pipe bends straight upward through a height of 10.4 m and joins another horizontal pipe whose radius is 3.72 x 10-2 m. What is the speed of the liquid in the higher horizontal pipe if the pressure in both horizontal pipes is the same?
A 300kg piano slides 4.10 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.4. Determine the force exerted by the man.
Two pots are identical except that the flat bottom of one is aluminum, whereas that of the other is copper. find the temperature of the heating element on which the copper bottom rests
A diffraction grating with 600 lines per mm is illuminated with light of wavelength 520. What is the distance between the two fringes
Two free point charges +q and +4q are a distance l apart. Find the location, magnitude, and sign of the third charge
police radars determine speed by measuring the doppler shift of radio waves reflected by a moving vehicle. the do so by
A tortoise can run with a speed of 11.7 cm/s, and a hare can run 18.1 times as fast. How long does the race take
A charged particle of mass 8.39×10?4 kg starts from rest and accelerates through a potential difference of +25,000 V to reach a speed of 1240 m/s
A harmonic wave is traveling along a rope. It is observed that the oscillator that generates the wave completes 42.0 vibrations in 27.0 s. Also, a given maximum travels 430 cm along the rope in 6.0 s. What is the wavelength? cm
At a market a bunch of bananas are set on a spring scale tomeasure their weight. What is the massof the bananas
At its highest temperature, a space heater has a resistance of 19.5 ohm, find the average power output of the space heater
A Styrofoam cup holding 90 g of hot water at 95°C cools to room temperature, 23.0°C. What is the change in entropy of the room? Neglect the specific heat of the cup and any change in temperature of the room.
A block of mass m1 = 37 kg on a horizontal surface is connected to a mass m2 = 17.6 kg that hangs vertically. What is the acceleration of the hanging mass
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