Question 15 15. An old-fashioned LP record rotates at 33 1/3 rpm. - What is its frequency in rev/s? - What is its period in seconds?16. A typical hard disk in a computer spins at 10,000 rpm. - What is the frequency in rev/s? - What is the period, in seconds?17. A CD-ROM drive in a computer spins the 12-cm-diameter disks at 7,300 rpm. - What is a disk’s period in seconds? - What is a disk’s frequency in rev/s?18. The horse on a carousel is 4.1 m from the central axis. If the carousel rotates at 0.14 rev/s: - How fast does it take the horse to go around twice? - How fast is a child on the horse going (in m/s)?19. The radius of the earth’s very nearly circular orbit around the sun is 1.50 x 10^11 m. Find the magnitude of the earth’s velocity as it travels around the sun. Assume a year of 365.25 days. Find the magnitude of the earth’s centripetal acceleration as it travels around the sun.20. Modern wind turbines are larger than they appear, and despite their apparently lazy motion, the blade tips can be quite high—many times higher than the wind speed. A turbine has 80-m-long blades that spin at 14 rpm. At the tip of a blade, what is the speed?

Given Data The old fashioned LP record rotates at a rate ω=3313 rpm We have to calculate its…

Answered: An old-fashioned LP record rotates at…

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An old-fashioned LP record rotates at 33½ rpm. What is its frequency in rev/s? What is its period, in seconds?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

Question 15

15. An old-fashioned LP record rotates at 33 1/3 rpm.
- What is its frequency in rev/s?
- What is its period in seconds?

16. A typical hard disk in a computer spins at 10,000 rpm.
- What is the frequency in rev/s?
- What is the period, in seconds?

17. A CD-ROM drive in a computer spins the 12-cm-diameter disks at 7,300 rpm.
- What is a disk’s period in seconds?
- What is a disk’s frequency in rev/s?

18. The horse on a carousel is 4.1 m from the central axis. If the carousel rotates at 0.14 rev/s:
- How fast does it take the horse to go around twice?
- How fast is a child on the horse going (in m/s)?

19. The radius of the earth’s very nearly circular orbit around the sun is 1.50 x 10^11 m. Find the magnitude of the earth’s velocity as it travels around the sun. Assume a year of 365.25 days. Find the magnitude of the earth’s centripetal acceleration as it travels around the sun.

20. Modern wind turbines are larger than they appear, and despite their apparently lazy motion, the blade tips can be quite high—many times higher than the wind speed. A turbine has 80-m-long blades that spin at 14 rpm. At the tip of a blade, what is the speed?

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