4 years ago

Help? Will give thanks if right (thank you)

Physics

1 answer:

ICE Princess25 [194]4 years ago

3 0

Answer:

1.986 * 10 to the power of 6 (100,000) equals
1,986,000

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Two skaters skate toward each other, each moving at 3.3 m/s. Their lines of motion are separated by a perpendicular distance of

vredina [299]

Answer:

4.4 rad/s

Explanation:

When the 2 skaters is spinning with a distance of 1.5m, their rotation radius is half of that distance, which is 1.5/2 = 0.75m.

Then their moments of inertia, given that their mass being 51 kg, is (treating them as point mass particle):

$I = Mr^2 = 2Mr^2 = 51*0.75^2 = 38.25 kg.m^2$

When they change from linear motion to rotational motion, their energy must be conserved:

$E_L = E_r$

$2*(0.5Mv^2) = 2*(0.5I\omega^2)$

$\omega^2 = \frac{Mv^2}{I}$

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4 years ago

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Answer:

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Explanation:

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Velocity = Displacement/Time...where Displacement is length

Velocity = Length/Time

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The answer is A. It decreases

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Which food chain shows the correct flow of energy is an ecosystem ?

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The 4th one is correct
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A fan is to accelerate quiescent air to a velocity of 8 m/s at a rate of 9 m3 /s. determine the minimum power that must be suppl

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Given:
ρ = 1.18 kg/m³, density of air
v = 8 m/s, flow velocity
Q = 9 m³/s, volumetric flow rate

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The actual power will be higher because 100% efficiency is not possible.

Answer: 339.8 W (nearest tenth)

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4 years ago