• A data CD takes 3 [seconds] to reach its operatingrotational speed of 5400 [rpm] (revolutions perminute). What is the CD's average accelerationwhile it is getting up to speed?A)190 [rad/s²]1,700 [rad/s²]B)C) 16,200 [rad/s²]D) Don't knowWho uses CD's anymore?E)

Answered: Image /qna-images/answer/f595272e-69df-4547-9d69-861f3d970cd5.jpg

Answered: A data CD takes 3 [seconds] to reach…

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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Earth Rotation It takes 23 hours 56 minutes and 4 seconds for the earth to make one revolution (mean sidereal day). What is the angular speed of the earth? Submit Answer Tries 0/10 Assume the earth is spherical. Relative to someone on the rotation axis, what is the linear speed of an object on the surface if the radius vector from the center of the earth to the object makes an angle of 58.0° with the axis of rotation. The radius of the earth is 6.37×10³ km. Submit Answer Tries 0/10 What is the acceleration of the object on the surface of the earth in the previous problem? Submit Answer Tries 0/10
time of 5 rotations (16.5 s) Time of 1 rotation (3.3 s) Distance from shoulder to elbow (20.32cm) Distance from shoulder to middle of hand (56.99cm) A. What was the average angular speed (degrees/s and rad/s) of the hand? B. What was the average linear speed (m/s) of the hand? C. Are the answers to A and B the same or different?
A disk spins at 4.0 revolutions/second. What is its period, in second? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
18.) A grinding wheel 0.40 m in diameter rotates at 2200 rpm . a.) Calculate its angular velocity in rad/s. Express your answer using three significant figures. w=_______________rad/s b.) What is the linear speed of a point on the edge of the grinding wheel? Express your answer to two significant figures and include the appropriate units. v= ______________ ______________ c.) What is the acceleration of a point on the edge of the grinding wheel? Express your answer to two significant figures and include the appropriate units. aR=______________ _____________
1. In the previous unit we defined a ‘period’ as the time to complete one rotation. How can you expand on this definition?
An electric fan is turned off, and its angular velocity decreases uniformly from 450 rev/min to 220 rev/min in a time interval of length 4.50s. a) Find the angular acceleration α in revolutions per second per second. b) Find the number of revolutions made by the fan blades during the time that they are slowing down in Part A. c) How many more seconds are required for the fan to come to rest if the angular acceleration remains constant at the value calculated in Part A?
Number 4 needs answered
ENGINEERING QUESTION- SOLVE FROM SCRATCH!An engine fan initially rotates at 450 rpm and is turned off for 20.0 seconds, during which time it rotates at 100 revolutions.a) How fast is the steering wheel turning when it turns again?b) In how much time after the first lapse would it have stopped completely?
Just need D A) 68.46 rad/s^2 B) 1.36 rad/s^2 C)59.95 N
2) A bicycle wheel is rotating at 18 rad/s. The person is pedaling such that the wheel is accelerating at 4 rad/s^2.How much time elapses until the bike rider is moving at 20 m/s? Assume the bicycle has 27 inches diameter wheels. a) 10.1 s b) 9.3 s c) 58.4 s d) 15.4 s e) 28.9 s
The driver of a car traveling at 17.7 m/s ap- plies the brakes and undergoes a constant deceleration of 1.38 m/s How many revolutions does each tire make before the car comes to a stop, assuming that the car does not skid and that the tires have radii of 0.42 m? Answer in units of rev. 2 ².

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A data CD takes 3 [seconds] to reach its operating rotational speed of 5400 [rpm] (revolutions per minute). What is the CD's average acceleration while it is getting up to speed? A) 190 [rad/s²] 1,700 [rad/s²] C) 16,200 [rad/s] D) Don't know B) E) Who uses CD's anymore?