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Water pressurized to 3 * 10^5 pa is flowing at 5 m/sec in a horizontal pipe which contracts to 1/3 its former area. What is the pressure and velocity of the water after the contraction?
Two people wish to push a big beer freezer weighing 2000 N up a ramp inclined at an angle of 37.0o with the horizontal. what average force does it exert on the heavy object
A 280g wood block is firmly attached to a very lighthorizontal spring. how far beyond its equilibrium position will it stretch at its firstmaximum extension
The focal length of the human eye is approximately 1.7 cm. What is the f-number for the human eye in bright light, when the pupil diameter is 3.0mm
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. What is the net charge of all these electrons
A stone is dropped from the roof of a building; 1.90s after that, a second stone is thrown straight down with an initial speed of 25.0m/s , How long did it take the first stone to reach the ground
A loop of diameter d = 12 cm, carrying a current I = 0.4 A is placed inside a magnetic field B = (0.2 T) i^+ (0.4 T) j^. What is the potential energy of the loop
A lit firecracker is shot straight up at 50 m/s. How high is it above ground level 5 s later when it explodes? How fast is it moving when it blows up? How far has it fallen from its maximum height?
The picture below represents the crests of water waves spreading out from a periodic disturbance in a pond. The phase difference (in degrees) between points A and E is
a cylinder contains 3.2l of oxygen at 340k and 2.6 atm . the gas is heated causing a piston in the cylinder to move
An electron has an initial velocity of 4.9 • 106 m/s in a uniform 1.9 • 105 N/C strength electric field. How far does the electron travel before coming into rest in m
Explain how could he use technical, human and conceptual skills to maintain an environment that encourages innovation and professionalism among the virus hunters?
The diffraction pattern of a uniformly illuminated double-slit aperture consists of bright fringes spaced 5.00 cm apart on a screen 2.00 m from the aperture. what is the slit width and slit seperation
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