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Find the minimum gauge pressure needed in the water pipe leading into a building if water is to come out of a faucet on the twelfth floor, 45.6 meter above that pipe.
The beam emerging from a ruby laser (wavelength 694.3 nm) passes through a circular aperture 4.7 mm in diameter. If the spread of the beam is limited only by diffraction, what is the angular speed of the beam
A 4.9 kg block is initially at rest on a horizontal frictionlesssurface when a horizontal force in the positive direction ofan x axis is applied to the block. The force isgiven by (x) = (2.8- x2) N, where x is inmeters and the initial position of ..
A sample of an unknown material appears to weigh 255 N in air and 195 N when immersed in alcohol of specific gravity 0.700. What is the volume of the material
An electric field of 1.48 kV/m and a magnetic field of 0.387 T act on a moving electron to produce no net force. If the fields are perpendicular to each other, Determine is the electron's speed?
A 17-cm-long microscope has an eyepiece with a focal length of 3.1cm and an objective with a focal length of 0.35cm. What is the approximate magnification
The centripetal acceleration in a horizontal centrifuge is 75 g's when it is rotating at 2000 rpm, What is the radius of the centrifuge
A 50000-kg railroad freight car collides with a stationary caboose car. They couple together, and 31 percent of the initial kinetic energy is dissipated as heat, sound, vibrations, etc. What is the mass of the caboose?
One terminal of a car battery is said to be connected to "ground" since it is not really connected to the ground. What is meant by this experssion
A 28 Vpp square wave (50% of the time at +28 volts and 50% of the time at 0 volts) is connected to a 4 ohm speaker. Calculate the average power delivered to the speaker
A uniform rope of mass m and length L is hanging straight down from the ceiling. A small-amplitude transverse wave is sent up the rope from the bottom end. Derive an expression that gives the speed v of the wave on the rope in terms of the distanc..
A ray of 600 nm light traveling through air is incident on a slab of diamond (n=2.41) at an angle of theta=60 to the normal. What is the wavelength of light inside the diamond
A delivery truck travels 30 blocks north, 20 blocks east, and 24 blocks south. Suppose the blocks are similar length. Find the magnitude of its final displacement from origin
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