Which of the following experiments showed that the atomic nucleus is very small compared to the size of the whole atom? a) Rutherford Backscattering b) Blackbody Radiation
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A 140 gram piece of iron initially at 100°C is placed into 150 grams of water initially at 25°C. What is the final equilibrium temperature (Tf) of the system, assuming no heat is lost to the environment?
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The graph below shows the magnetic flux Φ through a loop over time. Which of the following shows the correct current I through the loop over the same time interval?
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For an oxygen atom (Z = 8), list the quantum numbers n, l, ml, and ms for each electron. Also compute the z-component of orbital angular momentum:
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A magnetic field in a region of space in which there are no currents is given by:
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Points A and B lie along the line joining two equal and opposite charges +q and −q. Each point is a distance b from one of the charges, and the total distance between the charges is d = 4b.
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Explain how energy is released in stars.
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A brand new, empty, electrically powered refrigerator with its doors removed is placed in a sealed, perfectly insulated room and is plugged in and turned on remotely.
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A 75 g, 40-cm-long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 12 g ball of clay traveling horizontally at 2.5 m/s hits and sticks to the very bottom tip of the rod.
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Find the two times t1 and t2 when the velocity of the ball makes an angle of 60° with the horizontal (x-axis).
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