What percentage change in tension of one of strings
The corresponding violin strings on two violins in an orchestra are found to produce a beat frequency of 2 Hz when a frequency of 660 Hz is played. What percentage change in the tension of one of the strings would bring them to the same frequency?
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During a workout, football players ran up the stadium stairs in 85 . The stairs are 88 long and inclined at an angle of 27. If a player has a mass of 92 , estimate his average power output on the way up. Ignore friction and air resistance.
An object weighing 347 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 316 N. Immersed in oil, the object weighs 328 N. Calculate the density of the object
A long, straight wire carries a current of 44 A. The magnetic field produced by this current at a certain point is 8.0 10-5 T. How far is the point from the wire?
three connected blocks are pulled to the right on a horizontal frictionless table by a force of magnitude T3 = 65.0 N. If m1 = 12.0 kg, m2 = 24.0 kg, and m3 = 31.0 kg, calculate (a) the magnitude of the system's acceleration, (b) the tension T1, a
An open container holds ice of mass 0.590 at a temperature of -10.2. The mass of the container can be ignored. How much time passes before the ice starts to melt?
What speed do you predict for the block at the top of the track? (c) Does the block actually reach the top of the track, or does it fall off before reaching the top?
X rays have higher frequency than radio waves. Which of the following statements about X rays and radio waves is not true?
If one observer records a sound level of 52.8 dB and the other records a sound level of 83.5 dB, how far is the speaker from each observer? Enter the longest distance first.
The mass of a carbon atom is 2.0x10^-26. What is the kinetic energy of a carbon atom moving with a speed of 500 m/s?
A uniform disk turns at 3.7 rev/s around a frictionless spindle. A nonrotating rod, of the same mass as the disk and length equal to the disk's diameter, is dropped onto the freely spinning disk, see the figure. They then turn together around the
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