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3 years ago

A wheel starts from rest and rotates with constant angular acceleration to reach an angular speed of 12.9 rad/s in 2.98 s.

Physics

1 answer:

PtichkaEL [24]3 years ago

8 0

Explanation:

(a) Find the magnitude of the angular acceleration of the wheel.

angular acceleration = angular speed /time
angular acceleration = 12.9/2.98 = 4.329rad/s²

(b) Find the angle in radians through which it rotates in this time interval.

angular speed = 2x3.14xf
12.9rad = 2 x3.14

rad = 6.28/12.9
rad = 0.487

Now we convert rad to angle

1 rad = 57.296°
0.487 = unknown angle
unknown angle =57.296 x 0.487 = 27.9°

The angle in radians = 27.9°

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Given :

Number of operations move through a pocket calculator during a full day's operation , $n=1.34 \times 10^{20}$ .

To Find :

How many coulombs of charge moved through it .

Solution :

We know , charge in one electron is :

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3 years ago

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Answer:

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Explanation:

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2 years ago

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Answer:

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Explanation:

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