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A guitar string is supposed to vibrate at 247 Hz but is measured toactually vibrate at 255 Hz. By what percentage should the tensionon the string be changed to get the frequency to the correctvalue?
A 368g oscillator has a speed of 98.5cm/s when its displacement is 2.70cm and 72.0cm/s when its displacement is 5.00cm. What is the oscillator's maximum speed?
A 200 gram metal block absorbs 1500 joules of heat, and its temperature changes by 150 degrees Celsius. What is the specific heat capacity of this metal
Two air-track gliders m1 and m2 are joined together with a light string. What is the tension in the cord joining gliders
An unstrained horizontal spring has a length of 0.34 m and a spring constant of 290 N/m. Two small charged objects are attached to this spring, one at each end. The charges on the objects have equal magnitudes.
A movig particle encounters an external electric field that decreases its kinetic energy from 9960 eV to 7700 eV as the particle moves from position A to position B. Determine the charge of the particle
A particle is acted on by two torques about the origin: ?1 has a magnitude of 4.5 N·m and is directed in the positive direction of the x axis, and ?2 has a magnitude of 3.2 N·m and is directed in the negative direction of the y axis. What are the mag..
An engineer wants to find the rotational inertia of an odd-shaped object of mass 9.0 kg about an axis through its center of mass. what is the rotational inertia of the odd-shaped object
1ml of distilled water is injected into a length of 3mm diametre tubing and sealed at the other end by folding over, Why doesn't water drain out when the tube is hung vertically
An airplane traveling at half the speed of sound emits a sound of frequency 5.45 kHz. At what frequency does a stationary listener hear the sound
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 51.0cm. find the magnitude of the gravitational acceleration on this planet
A movie camera with a (single) lens of focal length 70 mm takes a picture of a person standing 24 m away. what is the height of the image in millimeters on the film
A possible means for making an airplane invisible to radar is to coat the plane with an antireflective polymer. how thick would you make the coating
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