Question

3. [-/15 Points] DETAILS SERCP11 7.1.P.004. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A potter's wheel moves uniformly from rest to an angular speed of 0.23 rev/s in 25.0 s. (a) Find its angular acceleration in radians per second per second. rad/s² (b) Would doubling the angular acceleration during the given period have doubled final angular speed? Yes No Need Help? 4. [-/15 Points] DETAILS SERCP11 7.A.P.050. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A digital audio compact disc carries data along a continuous spiral track from the inner circumference of the disc to the outside edge. Each bit occupies 0.6 µm of the track. A CD player turns the disc to carry the track counterclockwise above a lens at a constant speed of 1.45 m/s. (a) Find the required angular speed at the beginning of the recording where the spiral has a radius of 2.30 cm. (Enter your answer to at least one decimal place.) rad/s (b) Find the required angular speed at the end of the recording, where the spiral has a radius of 5.15 cm. (Enter your answer to at least one decimal place.) rad/s (c) A full-length recording lasts for 60 min, 33 s. Find the average angular acceleration of the disc. rad/s2 (d) Assuming that the acceleration is constant, find the total angular displacement of the disc as it plays. rad (e) Find the total length of the track. km Need Help?

          3. [-/15 Points]
DETAILS
SERCP11 7.1.P.004.
MY NOTES
ASK YOUR TEACHER
PRACTICE ANOTHER
A potter's wheel moves uniformly from rest to an angular speed of 0.23 rev/s in 25.0 s.
(a) Find its angular acceleration in radians per second per second.
rad/s²
(b) Would doubling the angular acceleration during the given period have doubled final angular speed?
Yes
No
Need Help?
4. [-/15 Points]
DETAILS
SERCP11 7.A.P.050.
MY NOTES ASK YOUR TEACHER
PRACTICE ANOTHER
A digital audio compact disc carries data along a continuous spiral track from the inner circumference of the disc to the outside
edge. Each bit occupies 0.6 µm of the track. A CD player turns the disc to carry the track counterclockwise above a lens at a
constant speed of 1.45 m/s.
(a) Find the required angular speed at the beginning of the recording where the spiral has a radius of 2.30 cm. (Enter
your answer to at least one decimal place.)
rad/s
(b) Find the required angular speed at the end of the recording, where the spiral has a radius of 5.15 cm. (Enter your
answer to at least one decimal place.)
rad/s
(c) A full-length recording lasts for 60 min, 33 s. Find the average angular acceleration of the disc.
rad/s2
(d) Assuming that the acceleration is constant, find the total angular displacement of the disc as it plays.
rad
(e) Find the total length of the track.
km
Need Help?

3. [-/15 Points]
DETAILS
SERCP11 7.1.P.004.
MY NOTES
ASK YOUR TEACHER
PRACTICE ANOTHER
A potter's wheel moves uniformly from rest to an angular speed of 0.23 rev/s in 25.0 s.
(a) Find its angular acceleration in radians per second per second.
rad/s²
(b) Would doubling the angular acceleration during the given period have doubled final angular speed?
Yes
No
Need Help?
4. [-/15 Points]
DETAILS
SERCP11 7.A.P.050.
MY NOTES ASK YOUR TEACHER
PRACTICE ANOTHER
A digital audio compact disc carries data along a continuous spiral track from the inner circumference of the disc to the outside
edge. Each bit occupies 0.6 µm of the track. A CD player turns the disc to carry the track counterclockwise above a lens at a
constant speed of 1.45 m/s.
(a) Find the required angular speed at the beginning of the recording where the spiral has a radius of 2.30 cm. (Enter
your answer to at least one decimal place.)
rad/s
(b) Find the required angular speed at the end of the recording, where the spiral has a radius of 5.15 cm. (Enter your
answer to at least one decimal place.)
rad/s
(c) A full-length recording lasts for 60 min, 33 s. Find the average angular acceleration of the disc.
rad/s2
(d) Assuming that the acceleration is constant, find the total angular displacement of the disc as it plays.
rad
(e) Find the total length of the track.
km
Need Help?

Added by Alexandra W.

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