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Consult Interactive Solution 7.10 for a review of problem-solving skills that are involved in this problem. A stream of water strikes a stationary turbine blade horizontally, as the drawing illustrates. The incident water stream has a velocity of +16.0 m/s, while the exiting water stream has a velocity of -16.0 m/s. The mass of water per second that strikes the blade is 45.0 kg/s. Find the magnitude of the average force exerted on the water by the blade.
The potential energy of two small particles in water is approximately: Write down a formula for the force between them
"Rocket Man" has a propulsion unit strapped to his back. He starts from rest on the ground, fires the unit, and accelerates straight upward. Find the work done by the force generated by the propulsion unit
a 10.0kg, 16.0m long, uniform beam is supported by two scales. A 40.0kg box is placed on the beam. what are the scale readings
A car drives straight off the edge of a cliff that is 58 m high. The police at scene of the accident observed that the point of impact is 121m from the base of cliff. How fast was the car traveling when it went over the cliff.
A certain amount of oxygen gas occupies a volume of 12 liters when its temperature is 20 oC and its pressure is 1 atm. Calculate the number of grams of oxygen:
A 400lb woman stands on a floor in flat soled shoes. A 130lb woman stands on the same floor in a high heel shoe with all her weight is on the heel of the shoe. Which person is more likely to dent the floor?
A machine pulls a 40 trunk a distance of 2 m along a 40 degree incline at constant speed. what is the work done on the truck by the machines force
A 13.6 kg object on a horizontal frictionless surface is attached to a spring with k = 519 N/m. find the initial potential energy of the block-spring system
A pine cone falls from a tall tree. It takes 0.2 seconds to pass by a 2 meter tall window, i.e.the time between when it' s visible at the top of the window, How high above the window was it at its starting point
Light of wavelength 587.5 nm illuminates a slit of width 0.75 mm. Calculate the width of the central maximum
A ray of light is incident at angle 60 degrees on the upper surface of a transparent plate of thickness h=1cm, What is that lateral displacement d of the outgoing ray with respect to the incident ray
The source of our Sun's energy is a series of fusionreactions. Mainly, four protons become a helium nucleus plus twopositrons, plus two neutrinos (which have no rest mass), plusenergy which is radiated.
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