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A stream of water strikes a stationary turbine blade horizontally,as the drawing illustrates. The incident water stream has avelocity of +18.0 m/s, while the exiting water stream has avelocity of -18.0 m/s. The mass of water per second that strikes the blade is 42.0 kg/s. Find the magnitude of the average force exerted on the water by the blade.
Transverse waves on a string have wave speed , amplitude , and wavelength . The waves travel in the -x direction, andat the end of the string has its maximum upwarddisplacement. Find the frequency of these waves.Find the wave number of these waves..
A point on the rim of a 0.70 m diameter grinding wheel changes speed uniformly from 12 m/s to 26 m/s in 7.5 s. What is the average angular acceleration of the wheel during this interval
a tennis ball of mass mt is held just above a basketball of mass mb and radius rb. with their centers vertically
A horizontal spring-mass system oscillates on a frictionless table. If the ratio of the mass to the spring constant is 0.062 kg*m/N, find the maximum extension of the spring
Entrance and exit ramps for freeways are often circular stretches of road. As you go around one at a constant speed, you will experience a constant acceleration. Suppose you drive through an entrance ramp at a modest speed and your acceleration is 2...
question a train traveling at a constant speed sounds the whistle as it approaches a crossing and continues to sound
the human ear canal is about 2.8 cm long and can be regarded as a tube open at one end and closed at the eardrum. what
A gamma-ray photon produces an electron-positron pair, each with a kinetic energy of 255 keV. What was the wavelength of the photon
Suppose a car is traveling at +16.8 m/s, and the driver sees a traffic light turn red. After 0.569 s has elapsed, calculate the stopping distance of the car
Which of the following best describe Lenz's Law?
A piece of glass has a temperature of 88.0 °C. Liquid that has a temperature of 31.0 °C is poured over the glass, completely covering it, and the temperature at equilibrium is 58.0 °C. The mass of the glass and the liquid is the same. Ignoring the co..
A Carnot-efficiency engine operating between a reservoir of liquid mercury at its melting point and a colder reservoir extracts 15.0 J of heat from the mercury and does 4.0 J of work during each cycle. What is the temperature of the colder reservo..
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