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2 years ago

A comet is traveling in outer space with a velocity of 2000 m s. How long will it take to travel 300.000 meters?

Physics

1 answer:

nevsk [136]2 years ago

4 0

Answer:

.15s

Explanation:

Follow the units here. If you divide 300.000m by 2000m/s then you'll end up with the meters reduced and just the seconds. So that's what you do to get the time:

(300.000m)/(2000m/s ) =

(300.000/2000)(m•s/m) =

0.15s

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2 years ago

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2 years ago

Four point masses of 3.0 kg each are arranged in a square on masslessrods. The length of a side of the square is 0.50m. What is

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Answer:

Part a)

$I = 1.5 kg m^2$

Part b)

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Part c)

$I = 1.5 kg m^2$

Explanation:

Part a)

Moment of inertia of the system about an axis passing through B and C is given as

$I = mL^2 + mL^2 + m(0) + m(0)$

$I = 2mL^2$

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Part b)

Moment of inertia of the system about an axis passing through A and C is given as

$I = m(0^2) + m(\frac{L}{\sqrt2})^2 + m(0) + m(\frac{L}{\sqrt2})^2$

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Part c)

Moment of inertia of the system about an axis passing through the center of the square and perpendicular to the plane of the square

$I = m(\frac{L}{\sqrt2})^2 + m(\frac{L}{\sqrt2})^2 + m(\frac{L}{\sqrt2})^2 + m(\frac{L}{\sqrt2})^2$

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