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Tcecarenko [31]
3 years ago
5

Working together, Melone and Mrs. Harris can complete lesson plans in 5.14 hours. Had she done it alone it would have taken Mrs.

Harris 9 hours. Find long it would take Mrs. Melone to do it alone
Mathematics
1 answer:
Dominik [7]3 years ago
7 0
It would have taken her 3.86 hours
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A gear with a diameter of 12.0 inches makes 35 revolutions every three minutes. Find the linear and angular velocities of a poin
alina1380 [7]

Answer:

Angular velocity: \omega = \frac{7\pi}{18} \,\frac{rad}{s} (1.222\,\frac{rad}{s})

Linear velocity: v = \frac{14\pi}{3}\,\frac{m}{s} (14.661\,\frac{m}{s})

Step-by-step explanation:

The gear experiments a pure rotation with axis passing through its center, the angular (\omega), in radians per second, and linear velocities (v), in inches per second, of a point on the outer edge of the element are, respectively:

\omega = \frac{2\pi}{60}\cdot \dot n (1)

v = R\cdot \omega (2)

Where:

\dot n - Rotation rate, in revolutions per minute.

R - Radius of the gear, in inches.

If we know that \dot n = \frac{35}{3}\,\frac{rev}{min} and R = 12\,in, then the linear and angular velocities of the gear are, respectively:

\omega = \frac{2\pi}{60}\cdot \dot n

\omega = \frac{7\pi}{18} \,\frac{rad}{s} (1.222\,\frac{rad}{s})

v = R\cdot \omega

v = \frac{14\pi}{3}\,\frac{m}{s} (14.661\,\frac{m}{s})

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3 years ago
Need help ASAP! PLSS
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Answer:

i think u add them

Step-by-step explanation:

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Rudiy27

Answer:

4.5 or 4.69 because you round it

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What is 14.36 times 4.9 equals what??
NNADVOKAT [17]
70.36 I believe. :D Hope I helped.
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