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A steel ring with a 2.500 in diameter at 20 degrees Celsius is to he warned and slipped over a brass shafts with a 2.5030 in outside diameter at 20 degrees Celsius To what temperature should the ring be warmed?
If the ring and the shaft together are cooled by some means such as liquid air, at what temperature will the ring just slip off the shaft?
question when a beam of monochromatic light is incident on two narrow slits by a distance .14 mm the angle between the
A steel tube, which is closed at both ends, is filled with air. The air in the tube is vibrating at a frequency of 160·Hz. Use 340·m/s for the speed of sound in air. What is the wavelength of the sound waves in the tube
an escalator in a shopping center is designed to move 33 people 78 kg each at a constant speed of 1.1 ms at 45 degree
A 800 N box is lowered from rest by a crane. If it travels 12 meters downward in 10 seconds, what is the tension in the cranes cable
Three point charges , 2 positive, and 1 negative, each havinga magnitude of 20uC are placed at the vertices of an equilateraltriangle 30.0cm on a side. What is the electric potential at the negative charge
A Styrofoam cooler has a surface area of 2,700 cm2 and a wall thickness of 3.0 cm. Styrofoam has a coefficient of thermal conductivity of 0.01 W/m C. how long will the ice last
When the tungsten filament in a 60 W, 120 V light bulb reaches 2010degrees C, 60 W of electric power is used to produce light andheat. Find the current through the filament under these conditions which are established very shortly after the light i..
The kinetic energy of a nonrelativistic particle can be written in terms of its momentum as K = p ^2 /2 m . Planck's constant is 6.63 × 10^-34 J · s. What is the minimum kinetic energy of a proton confined within a nucleus having a diameter of 6 ×..
a dynamite blast at a quarry launches a rock straight upward and 2.3 s later it is rising at a rate of 14 ms. assuming
a 9 volt battery contains a total of 1.78 coulombs. when thebattery is connected in a circuit, the positive and negativechanges are split apart. Find the increase in potential energy
A 50.0-kg woman stands at the rim of a horizontal turntable having a moment of inertia of 560 kg · m2 and a radius of 2.00 m. find With what angular speed does the turntable rotate
A spherical source radiates sound uniformly in all directions. At a distance of 16 m, the sound intensity level is 10-4 W/m2. (a) At what distance from the source is the intensity 10-7 W/m2? (b) What power is radiated by this source?
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