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A steel section of the Alaskan pipeline had a length of 65 m and a temperature of 12°C when it was installed. What is its change in length when the temperature drops to a frigid -38°C?
The exhaust temperature of a Carnot heat engine is 250°C, What is the intake temperature if the efficiency of the engine is 27.0%
A small button placed on a horizontal rotating platform with diameter 0.316 m will revolve with the platform when it is brought up to a rotational speed of 39.0 rev/min, How far from the axis can the button be placed
Although both stars probably formed from the same clump of gas, more massive one must have had its birth slowed so that it became a key -sequence star millions of years later than its less massive companion.
A long straight metal wire of radius r1= 3.10E-2 m is surrounded by a metalic cylindrical shell of inner radius r2= 1.19E-1 m and outter radius r3= 1.81E-1 m. The axes of the wire and the cylindrical shell coincide.
How much heat must be absorbed by ice of mass m = 720 g at -10 degrees Celsius to take it to liquid state at 15 degrees Celsius
An observer, whose eyes are 1.99 m above the ground, is standing 35.0 m away from a tree. The ground is level, and the tree is growing perpendicular to it. The observer's line of sight with the treetop makes an angle of 23.0° above the horizontal. Ho..
A 658-kg boulder is dropped into a mine shaft that is 2.1 x 103 m deep. During the boulder's fall, the system consisting of the Earth, Determine the binding energy (in Joules) of the Earth-boulder system
What are the components of displacement vector from camp to summit? What is its magnitude? Decide the x axis east, y axis north, and z axis up.
An 80.7-kg jogger is heading due east at a speed of 1.950 m/s. A 53.60 kg jogger is heading 33.1° north of east at a speed of 2.89m/s. compute the magnitude (enter first) and direction of the sum of momenta of the two joggers.
An ideal gas expands isothermally, performing 4.36 multiplied by 103 J of work in the process. Calculate the change in internal energy of the gas
A spear fisherman estimates that a trout is 1.6 m below the water's surface. What is the actual depth of the fish
A capacitor can be made from two sheets of aluminum foil separated by a sheet of waxed paper. what is the capacitance of this capacitor
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