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A jet plane traveling 1890 km/h (525 m/s) pulls out of a dive by moving in an arc of radius 5.20 km. What is the plane’s acceleration in g’s?
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What is the percent uncertainty in the measurement 5.48 +/- 0.25 m?
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In the figure, three charged particles lie on an x axis. Particles 1 and 2 are fixed in place. Particle 3 is free to move, but the net electrostatic force on it from particles 1 and 2 happens to be zero. If L_23 = L_12, what is the ratio q_1/q_2?
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Planet A and planet B are in circular orbits around a distant star. Planet A is 7.0 times farther from the star than is planet B. What is the ratio of their speeds v_A / v_B?
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In a single-slit diffraction experiment, what must be the ratio of the slit width to the wavelength if the second diffraction minima are to occur at an angle of 37.0° from the center of the diffraction pattern on a viewing screen?
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The figure shows three pairs of identical spheres that are to
be touched together and then separated. The initial charges on them
are indicated. Rank the pairs according to (a) the magnitude of the
charge transferred during touching and (b) the charge left on the
positively charged sphere, greatest first.
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What is the weight of a 68-kg astronaut (a) on Earth, (b) on the Moon (g = 1.7 m/s^2), (c) on Mars (g = 3.7 m/s^2), (d) in outer space traveling with constant velocity?
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To what temperature will 8200 J of heat raise 3.0 kg of water that is initially at 10.0°C?
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Estimate (a) how long it took King Kong to fall straight down from the top of the Empire State Building (380 m high), and (b) his velocity just before “landing.”
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