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A 6.0-cm-diameter horizontal pipe gradually narrows to 4.0cm. When water flows through this pipe at a certain rate, thegauge pressure in these two sections is 32.0kPa and 24.0 kPa,respectively. What is the volume rate of flow?
The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 11-g nail
A 4.0-m-long iron bar of uniform cross section is held perpendicular to the wall by a wire from the end of the bar to the wall, what is the magnitude of the vertical component of force produced by the wall
A dockworker applies a constant horizontal force of 72.0N to a block of ice on a smooth horizontal floor, What is the mass of the block of ice
At the surface of Jupiter's moon Io, the acceleration due to gravity is 1.81m/s^2 . A watermelon has a weight of 53.0N at the surface of the earth. What is its mass on the earth's surface
A flat sheet of crown glass has a thickness of 2.3 cm. It is on top of a flat sheet of crystalline quartz that has a thickness of 1.6 cm. how far would it have traveled in a vacuum
in a double-slit interference experiment the wavelength is ? 652 nm the slit separation is d 0.150 mm and the screen
Two tiny spheres of mass 6.80 mg carry charges of equal magnitude, 72.0 nC, but opposite sign. Which ball (the one on the right or the one on the left ) has positive charge ? What is the magnitude E of the field
Three horizontal forces act on a packing crate on a horizontal surface: 600 N to the left, 200 N to the right, and friction. The packing crate remains at rest. The weight of the crate is 400 N. If the 600 N force is removed, the net force acting on t..
Reflecting telescope is built with a 20-cm-diameter mirror having a 1.00m focal length. It is used with a eyepiece 10X, What is the magnification of the telescope
Suppose a modified Joule's apparatus contains 2.8 kg of water. instead of the ropes having weights on the end, the apparatus is turned by exerting a constant horizontal force of 40 N on a heavy cord wrapped around the axle.
An iron brick measuring 200 mm / 20 cm / 0.05 m is submerged in pure water. (Hint: Use Table 4.4 from your book to find the densities) a) What is the weight of the brick? b) What is the buoyant force on the brick? c) What is the net force on the bric..
Estimate the current in an L-R circuit for t>T if the EMF is (12/T) t for 0
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