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Two similar guitar strings have the same length and mass, but slightly different tensions. If the beat frequency is 1.5 Hz, what is the ratio of the tensions of the two strings? Assume they are both tuned to approximately 330 Hz.
A U-shaped tube is open to the air at both ends and is partially filled with Mercury (density = 13,600 kg/m3). Water (density = 1000 kg/m3) is poured into the left arm until the water is 10 cm deep. How long upward from its initial position does t..
With what force F should she pull down on the rope to accelerate herself and platform upward at a rate of 0.77 m/s2.
The work completed by friction on the rock when it moves from point to point at the bottom of the bowl has magnitude 0.22. Just as the rock reaches point, what is the normal force on it because of the bottom of the bowl .
While surveying a cave, a spelunker follows a passage 190{rm m} straight west, then 210{rm m} in a direction 45.0^circ east of south, and then 260{rm m} at 30.0^circ east of north. After a fourth unmeasured displacement, she finds herself back whe..
A 626g sample of water at 90 degrees is mixed with 441g of water at 30 degrees. What is the final temp of the mixture? Presume not heat is lost to the surroundings.
A wave has a speed of 500.0 m/s and a wavelength of 4.9 m. What is the frequency of the wave? What is the period of the wave?
A meat baster consists of a squeeze bulb attached to a plastic tube. While the bulb is squeezed and free, with the open end of the tube under the surface of the basting sauce.
A helicopter is ascending vertically with a speed of 4.50 m/s. At a height of 195 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground.
A 105-kg water skier floating in a lake is pulled from rest to a speed of 14 m/s in a distance of 25m. What is the net force exerted on the skier, assuming his acceleration is steady.
Calculate the amount Stansfield should report as net cash provided (used) by financing activities in its 2010 statement of cash flows. (Enter amount as positive.)
A force vector has a magnitude of 590 newtons and points at an angle 44o of below the positive x axis. What is (a) x scalar component and (b) y scalar component of the vector.
An unstretched spring with spring constant 21 N/cm is suspended from the ceiling. A 3.3 kg mass is attached to the spring and let fall. To the nearest tenth of the centimeter, how far does it stretch the spring.
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