Estimate wave speed in the string
The A string of a violin is 32 cm long between fixed points with a fundamental frequency of 440 Hz and a mass per unit length of 6.5×10-4 kg/m. What are the wave speed in the string?
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Because of the cramped space under the hood, you'll need to pull at an angle of 115^circ with respect to the wrench shaft. With what force must you pull?
What is the best way we could reduce our dependence on foreign oil? Try to think of how our communities are designed.
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What is the pH of a solution which is 0.023 M in weak base and 0.035 M in the conjugate weak acid (Ka = 7.1 × 10-6)?
Two skaters that are initially at rest push off from one another. One has a mass of 50 kg and moves with a speed of 4.0 m/s to the right after pushing off. What is the velocity of the other skater whose mass is 75 kg?
It will be traveling with speed 197 m/s. We have a large and powerful spring whose stiffness is 2.5x10^5 N/m. How much must we compress the spring?
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A tapered, pressurized tank for a rocket contains 0.250 m3 of kerosene, which has a mass of 205 kg. The pressure at the top of the kerosene is 2.01 x 105 Pa. The pressure force of 18.0 kN on the tank's bottom, which has an area of 0.0800 m2. Find
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