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?
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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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