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A wire is made by attaching two segments together, end to end. One segment is made of aluminum and the other is steel. The effective coefficient of linear expansion of the two-segment wire is 15.1 x 10-6 (C°)-1. Find what fraction of the length is aluminum?
A skier is accelerating down a 30.0 degree hill at 1.8 m/s^2. How long will it take her to reach the bottom of the hill, assuming she starts from rest and accelerates uniformly, if elevation change is 325 m.
a coil of wire is connected to an ideal 6.0-v battery at t 0. at t 10.3 ms the current in the coil is 200 ma. one
A 30.0 kg hammer strikes a steel spike 2.30 cm in diameter while moving with a speed of 20.0 m/s. What is the average strain in the spike during the impact
It takes 7.60 ms for the current in and LR circuit to reach 60 percent of its maximum value. Decide the time constant of the circuit.
a ball is tossed so that it bounces off the ground rises to a height of 1.30 m and then hits the ground again 1.70 m
Calculate the force required to move an object.
A 0.99-cm-diameter microscope objective has a focal length of 2.6 mm. It is used in visible light with a wavelength of 532 nm. What is the objective's resolving power if used in air
The atom in a regular crystal can act as slits for light of the appropriate wavelength, Find what wavelengths do you think would be appropriate
Two Blocks (masses equal m and 2m) are resting on a sheet of ice, when a third block (mass equals 4m) is pushed into them. evaluate the final speed of each of the blocks
question1a cube of ice is taken from freezer at -8.3degc and placed in a 100 g aluminium calorimeter filled with 289 g
A 7.1cm diameter horizontal pipe gradually narrows to 5.7cm . When water flows through this pipe at a certain rate, the gauge pressure in these two sections is 33.0kPa and 24.0kPa, What is the volume rate of flow
nozzle of a hose is pointing straight up. the water rises to a height h above nozzle openig. how high does the water rise
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