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find the center of mass of a uniformly solid cone of base diameter 2r and height h and solid hemisphere of radius r where the two bases are touching at the origin
A 250 g, 24-cm-diameter plastic disk is spun on an axle through its center by an electric motor. What torque must the motor supply to take the disk from 0 to 1600 rpm in 4.1 s
The drawing shows two boxes resting on frictionless ramps. Onebox is relatively light and sits on a steep ramp. The other box isheavier and rests on a ramp that is less steep. The boxes arereleased from rest at A and allowed to slide down the ramp..
Find the force P that must be applied to a piston of area 12.10 cm2 to produce sufficient fluid pressure to support a car weighing 10,801 N by means of a column of fluid of cross sectional area 275 cm2
the fermilab tevatron could accelerate protons and anti-protons to kinetic energies of 1000 gev 1 tev. by how much in
An example would be Otto Preminger's Anatomy of a Murder. It was filmed in 1959. The director was an Austrian born director named Otto Preminger. The score was provided by Duke Ellington. Etc.
Air at 40-C and 200 kPa enters a 300-m section of 10-cm-diameter galvanized iron pipe. If a pressure drop of 200 Pa is measured over the section, estimate the mass flux and the flow rate.
An object weighing 330 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 265 N. Find the density of the object
Contact lenses are placed right on the eyeball, so the distance from the eye to an object (or image) is the same as the distance from the lens to that object. What is the power corresponding to the focal length
Two isolated metal balls are charged with +4.3 x 10-6 C and -7.5 x 10-6 C. Find the number of excess electrons on each ball after they touch each other and then brought apart
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer, What is the mass of the unknown element
A thin sheet of transparent material in air, with refractive index1.54, is illuminated by monochromatic light of wavelength 614nm. Calculate the wavelength of the light in the material.
A flashlight on the bottom of a 4.15 m deep swimming pool sends a ray upward andat an angle so that the ray strikes the surface of the water1.80 m from the point directly abovethe flashlight
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