Question: To take off from the ground, an airplane must reach a sufficiently high speed. The velocity required for the takeoff, the takeoff velocity, depends on several factors, including the weight of the aircraft and t ...
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Blue-green light has a frequency of about 6.00 x 10^14 Hz. Determine its wavelength. Compare this wavelength to the size of an atom (about 10^-10 m) by calculating the ratio: wavelength/(atom size).
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An inflatable life raft is released from an air plane at 500 m altitude, in level flight, with an air speed of 20 m/s in the horizontal direction. How long before the raft strikes the water? How far from the release poin ...
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The equation for motion for the ideal spring-mass system as derived in class is, ma+kx=0, where, m=mass, a=acceleration, k=spring stiffness, and x=displacement. 1) Describe briefly how the equation for motion arises from ...
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Question: Part A: Find the energy U0 stored in the capacitor. Express your answer in terms of A, d, V, and ϵ0. Remember to enter ϵ0 as epsilon_0. Part B: The capacitor is now disconnected from the battery, and the plat ...
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Question: It is proposed that future space stations create an artificial gravity by rotating. Suppose a space station is constructed as a 1000-m-diameter cylinder that rotates about its axis. The inside surface is the de ...
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Swimming at 1.50 m/s relative to still water, a swimmer heads directly across a river of width 80 m. He arrives 45.0 m downstream from the point directly across the river from his starting point. (a) What is the speed o ...
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Question: Three odd-shaped blocks of chocolate have the following masses and center-of-mass coordinates: (1) 0.300kg , (0.300 m, 0.300 m); (2) 0.400kg , (0.200 m, -0.400 m); (3) 0.200 kg , (-0.300m , 0.600 m). Find the x ...
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Question: Ten days after it was launched toward Mars in December 1998, the Mars Climate Orbiter spacecraft (mass 629 kg) was 2.87x10^6 km from the earth and traveling at 1.20x10^4 km/hr relative to the earth. At this tim ...
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Question: A proton has an initial speed of 3.5 x 10 5 m/s. a) What potential difference is required to bring the proton to rest? b) What potential difference is required to reduce the initial speed of the proton by a fac ...
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