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(a) How far, and in what direction, should a cellist move her finger to adjust a string's tone from an out-of-tune 449 Hz to an in-tune 440 Hz? The string is 68.0 cm long, and the finger is 20.0 cm from the nut for the 449-Hz tone.
(b) What is the fundamental frequency of the string i.e. the frequency once she removes her finger from the string and it vibrates over its full length?
(c) if the tension in the cello string is 134 N, what is its mass perunit length?
Two point charges of -1microC and 2microC are separated by a distance of 0.30m. What is the electrostatic force on each particle
A piece of thin spherical shell that has a radius of curvature of 92 cm is silvered on both sides. How far was the mirror moved
The potential difference between the plates of a capacitor is 145 V. Midway between the plates; a proton and an electron are released. The electron is released from rest.
A certain kind of glass has an index of refraction of 1.650for blue light of wavelength 430nm and an index of 1.615 for redlight of wavelength 680 nm. what is the angle between the two beams inside the glass
if the only force acting on a 0.5kg mass are F1-(2i-3j)N and F2=(8i+2j)N, what is the magnitude of acceleration of the particle
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1330 Hz. The bird-watcher, however, hears a frequency of 1410 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
A capacitor constructed of two metal plates which are 160 cm long and 4 cm wide. They are separated by a distance fo 0.2 mm, which is filled with an oil that has a dielectric constant (K) of 5.0
When the power is turned off on a turntable spinning at 67.0 rpm, you find that it takes 13.0 revolutions for it to stop while slowing down at a uniform rate. What is the angular acceleration (in rad/s^2), of this turntable
The cable lifting an elevator is wrapped around a 1.0--diameter cylinder that is turned by the elevator's motor. The elevator is moving upward at a speed of 2.3 . It then slows to a stop, while the cylinder turns one complete revolution.
An Olympic long jumper is capable of jumping 8.5m .Assuming his horizontal speed is 9.5m/s as he leaves the ground, How high does he go
How much force is required to hold a 7.20 cm diameter hose delivering 470 L/min by a 0.73rm cm diameter nozzle.
A stationary detector sends out a sound wave of frequency 0.315 MHz toward an approaching car. What is the frequency of the waves reflected back to the detector
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