A typical sugar cube has an edge length of 1 cm. If you had a cubical box that contained a mole of sugar cubes, what would its edge length be? (One mole = 6.02 x 10^23 units.) ... https://www.youtube.com/watch?v=1nlUWVQUhaM
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A guitar string produces 3 beats/s when sounded with a 350-Hz tuning fork and 8 beats/s when sounded with a 355-Hz tuning fork. What is the vibrational frequency of the string? Explain your reasoning.
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Water waves having parallel crests 4.5 cm apart pass through two openings 7.5 cm apart in a board. At a point 3.0 m beyond the board, at what angle relative to the “straight-through” direction would there be little or no wave action?
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In the return stroke of a typical lightning bolt, a current of 2.5 x 10^4 A exists for 20 μs. How much charge is transferred in this event?
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A turntable of radius R1 is turned by a circular rubber roller of radius R2 in contact with it at their outer edges. What is the ratio of their angular velocities, ω1/ω2?
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What is the magnitude of the momentum of a 28-g sparrow flying with a speed of 8.4 m/s?
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How much tension must a cable withstand if it is used to accelerate a 1200-kg car vertically upward at 0.70 m/s^2?
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Calculate the hydrostatic difference in blood pressure between the brain and the foot in a person of height 1.83 m. The density of blood is 1.06 x 10^3 kg/m^3.
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(a) How much energy is required to bring a 1.0-L pot of water at 20°C to 100°C? (b) For how long could this amount of energy run a 60-W lightbulb?
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