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The ends of a thin bar are maintained at dissimilar temperatures. The temperature of the cooler end is 13°C, as the temperature at a point0.15 m from the cooler end is 23°C and the temperature of the warmer end is 44°C. Assuming that heat flows only along the length of the bar (the sides are insulated), discover the length of the bar.
To verify her suspicion that a rock specimen is hollow, a geologist weighs the specimen in air and in water. What fraction of the specimen's apparent volume is solid
An aluminum rod is 22.0 cm long at 20°C and has a mass of 350 g. If 14,000 J of energy is added to the rod by heat, what is the change in length of the rod
A lightweight string of length 60cm is attached to the ceiling at points separated by distance. Three objects of equal mass are hung from the string, separating the string into 4 equal segments of length L. If θ = 40, find the measure of angle φ a..
A house is 53.0 ft long and 48 ft wide, and has 8.0-ft-high ceilings. What is the volume of the interior of the house in cubic meters and cubic centimeter.
sitting in a second-story apartment a physicist notices a ball moving straight upward just outside her window. the ball
a double-slit interference experiment is performed using blue light from a hydrogen discharge tube 486 nm. the
If a force vector has a magnitude of 2.61 newtons and points 64.5 degrees south of east, then what is its x-component?
Two blocks are connected by a string. The smooth inclined surface makes an angle of 35 degrees with the horizontal, and the block on the incline has a mass of 5.7 kg . The mass of the hanging block is = 2.9 kg.
A missile of mass 1.10 102 kg is fired from a plane of mass 5.10 103 kg initially moving at a speed of 3.50 102 m/s. determine is the final velocity of the plane
a 35 kg uniform ladder is leaned against a building. the 5 m tall ladder makes an angle of 60 degrees with the ground.
When a single person shouts at a football game, the loudness of sound at the center of the field is 55 dB. Than all the people shout together, the loudness increases to 106 dB. Suppose that each person is about the similar distance from the center of..
Imagine trying to build a portion of a draw bridge as in the following. The side towers reach h=100 meters high above the road level. what is the total tension in the lift wire
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