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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?
The average resistivity of the human body is 5 ohm*m. The conducting path between two hands is approximated as a cylinder with length 1.6m, what is the resistance between the hands
A 45kg figure skater is spinning on the toes of her skates at 1.2rev/s . Her arms are outstretched as far as they will go. What is her new rotation frequency, in revolutions per second
A car and a train move together along straight, parallel paths with the same constant cruising speed v0. How much time does it take for the car to come to a full stop
What minimum horsepower must a motor have to be able to drag a 350 kilogram block up a 15o ramp at a speed of 1.50 m/s if the coefficient of kinetic friction is 0.25
Light from an argon laser strikes a diffraction grating that has 5395 grooves per centimeter. Determine the wavelength of the laser light
Determine the biologically equivalent dose received by a patient from a chest Xray. The X-ray beam is turned on for 0.1 s, the intensity is 1W/m2, What biological effect is this radiation likely to have
A boat travels down the river from point A to point B in t1 = 3 h, and in the opposite direction in t2 = 6 h. How much time will it take for the boat to go from A to B with its engine turned off
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What is distance in meters - Calculate the average speed of the car for the first part of the trip.
2.28 kg of water are changed from ice at 0degc into liquid water at 0degc. the latent heat of fusion for water is lf
A planet's moon travels in an approximately circular orbit ofradius 9.0 107 m with a period of 6 h 34 min. Calculate the mass of the planet from this information
A light commuter rail train usually accelerates at a rate of 2.15 m/s^2 and usually decelerates with a rate of 3.20 m/s^2, The train can stop in 10.5 seconds from its top speed in an emergency. How far would it travel during this braking period
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