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SVETLANKA909090 [29]
3 years ago
10

How much power is needed to push a 95 kg chest at 0.67 m/s along a horizontal floor where the coefficient of friction is 0.77?

Physics
1 answer:
Savatey [412]3 years ago
8 0
F = mg\mu \\ \\  P =  \frac{Fdx}{dt} = Fv  \\ \\  P =  mg\mu\ v
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Answer:

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A 10 kg package is delivered to your house.
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A fuel pump sends gasoline from a car's fuel tank to the engine at a rate of 5.64 10-2 kg/s. the density of the gasoline is 735
Irina18 [472]
Given:
Gasoline pumping rate, R = 5.64 x 10⁻² kg/s
Density of gasoline, D = 735 kg/m³
Radius of fuel line, r = 3.43 x 10⁻³ m

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A = πr² = π(3.43 x 10⁻³ m)² = 3.6961 x 10⁻⁵ m²

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7 0
3 years ago
Read 2 more answers
As an intern with an engineering firm, you are asked to measure the moment of inertia of a large wheel, for rotation about an ax
AysviL [449]

Answer:

I=2.766\ kg.m^2

Explanation:

We have:

diameter of the wheel, d=0.88\ m

weight of the wheel, w_w=280\ N

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speed of the hanging mass after the descend, v_o=4\ m.s^{-1}

height of descend, h=2.5\ m

(a)

moment of inertia of wheel about its central axis:

I=\frac{1}{2} m.r^2

I=\frac{1}{2} \frac{w_w}{g}.r^2

I=\frac{1}{2} \times \frac{280}{9.8}\times 0.44^2

I=2.766\ kg.m^2

3 0
3 years ago
An object kept in front of lens, which is thick at the edges, produces a _________,
Wewaii [24]

Answer:

B

Explanation:

A diverging lens forms a virtual image that is as the same size as the object

4 0
2 years ago
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