The spinning rate of a CD-ROM varies according to the location of the disc from where data is being accessed. When accessing data from the inner circles of the disc, the CD can spin at a rate 430 rpm. Determine the frequency (in Hertz) and the period (in seconds) of the spinning CD. 7.17 min, 0.14 min O 7.17 Hz, 0.14 s O 71.7 Hz, 14 s O 71.7 rpm, 1.4 min
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- 2. a. A ferris wheel starts from rest and accelerates at 0.036 rad/s² to get up to its operating speed of 0.47 rad/s. What was the change in 8 as it approached its operating speed? Previous submissions: 扫楼 b. The ferris wheel has a radius of 8.0625 m. What's the final velocity in m/s of a person on the ride? Previous submissions:46. John swings a ball attached to a string as part of a Physics lab. If John swings the ball with a constant speed of 7 m/s and forms a circle of 0.20 m, what is the period of motion John would observe? А. 0.14 s В. 1.3 s С. 0.18 s D. No answer is correct E. 0.2 sIn a laboratory test of tolerance for high acceleration, a pilot is swung in a circle 12.0 m in diameter. It is found that the pilot blacks out when he is spun at 30.6 rpm (rev/min). At what acceleration (in SI units) does the pilot black out? acceleration: m/s? Express this acceleration in terms of a multiple of g. acceleration as a multiple of g: If you want to decrease the acceleration by 19.0% without changing the diameter of the circle, by what percent must you change the time for the pilot to make one circle? percent of time change: %
- Different situation now. You re out in space, on a rotating wheel-shaped space station of radius 1159 m. You feel planted firmly on the floor , due to artificial gravity. The gravity you experience is Earth-normal, that is, g = 9.81 m/s^2. How fast is the space station rotating in order to produce this much artificial gravity? Express your answer in revolutions per minute (rpm). 106.6 rpm 0.615 rpm 0.879 rpm 0.092 rpmWhich is the correct option?Please answer the following question(s): 1. A helicopter blade spins at exactly 130 revolutions per minute. Its tip is 5.00 m from the center of rotation. Hint: What is the shape of the path described by the helicopter blade? How do you find the length of this path? (a) What is the total distance traveled by the tip per minute? Enter to 3 significant figures Distance: m (b) What is the average speed of the tip of the blade? Enter to 3 significant figures Average speed: m/s (c) What is the average velocity over one revolution? Enter to 3 significant figures Average velocity: m/s
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- An object is moving counterclockwise around a circular track at a constant speed of 3 m/s. The track is centered at the origin and has a radius of 1 m. What is the object's acceleration vector when it is at point P shown? y. P -(3플)i ○금3 + (3프) i a = +(9) i m Oa = 0 -(9플)i1. The vehicle moves along a circular track at a consistent speed of 10 m/s. Determine the radial and transverse components of the car's velocity and acceleration at the moment when θ=3π/4 radians. A. How do the radial and transverse components of acceleration relate to the car's motion on the circular track? B. What are the radial and transverse components of velocity, and how are they related to the car's motion on the circular track?You re out in space, on a rotating wheel-shaped space station of radius 679 m. You feel planted firmly on the floor , due to artificial gravity. The gravity you experience is Earth-normal, that is, g = 9.81 m/s^2. How fast is the space station rotating in order to produce this much artificial gravity? Express your answer in revolutions per minute (rpm). 0.120 rpm 81.6 rpm 0.459 rpm 1.148 rpm