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3 years ago

A machinist is required to manufacture a circular metal disk with area 1300 cm2. (a) What radius produces such a disk

Physics

1 answer:

vichka [17]3 years ago

6 0

Answer:

Radius r = 20.34 cm

The radius that can produces such a disk is 20.34 cm

Explanation:

Area of a circle;

A = πr^2

A = area

r = radius

Making r the subject of formula;

r = √(A/π) ........1

Given;

A = 1300 cm^2

Substituting into the equation 1;

r = √(1300/π)

r = 20.34214472564 cm

r = 20.34 cm

The radius that can produces such a disk is 20.34 cm

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Answer:

0°

Explanation:

The angle between force and displacement should be 0° in order to get the maximum work done.

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3 years ago

a 1500 kg car traveling at 15 m/s to the south collides with a 4500 kg truck that is intially at rest at a spotlight. The car an

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The final velocity is 3.75 m/s to the south.

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