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A stretched string has a fundamental frequency of 175 Hz. Discover the new frequency if you simultaneously do all of the following 3things: you increase the tension in the string by a factor of 4, and you double its length and you decrease the mass per unit length of the string by a factor of 9.
1. 175 Hz
2. 350 Hz
3. 525 Hz
4. 700 Hz
5. 1575 Hz
A wave on a string has a speed of 151 m/s. If the diameter of the string is increased by a factor of four and the tension is held fixed
Starting from rest at the top of a tall, steep ramp, a sphere rolls without slipping to the ground 6.9 m below. At the bottom, its speed is 9.0 m/s. Question The sphere is either solid or hollow: which is it?
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