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Water is flowing through a channel that is 12 m wide with a speed of .75m/s. The water then flows into four identical channels, each of which has a width of 4m. The depth of the water does not change as it flows into the four channels. What is the speed of the water in one of the smaller channels?
If an electric clothes dryer has a power rating of 5000 watts and is used for 1 hour per day, how much money can be saved in a month
Two disks are mounted on frictionless bearings on the same axle and can b brought together so that they can couple and rotate as one unit. what is the angular speed after coupling
An echelette or blazed grating has 450 lines per centimeter and is ruled for the concentration of infrared light of wavelength 5.0 µm in the second order, find the angle of the ruled faces to the plane of the grating
A 77.0 kg man floats in fresh water with 3.00% of his volume above water when his lungs are empty, Calculate the volume of air he inhales--called his lung capacity--in liters
The average speed of blood in the aorta (the main blood vesselcoming from the heart) is 0.300 m/s. The average radius of theaorta is 1.0 cm. The aorta branches into 2×109 capillaries(very small blood vessels) which each have an average radius of 6..
Identical constant forces push two identical masses A and B continuously from a starting line to a finish line. which mass has the larger change in momentum
blood from two different patients is to be tested by having it glow through a long straight tube of length 10 cm and
Calculate the kinetic energy acquired by a 11 kg nail when it is struck by the 530 kg hammer moving with an initial speed of 4.4m/s.
A proton and an electron have the same kinetic energy upon entering a region of constant magnetic field. What is the ratio of the radii of their circular paths
The angularmomentum of a flywheel having a rotational inertia of 0.100 kgm2 aboutits central axis decreases from 3.40to 1.800 kgm2/s in0.90 s. How much work is done on the wheel
A non-uniform beam of length 4.51m and weight 1.05kN makes an angle of 24.0 degrees with the horizontal. Find the vertical component of the force exerted on the beam by the pivot
compute the force and the total work required in each case. Find the tension in each of the cables.
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