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3 years ago

7

If the motor exerts a constant force of 30 lb on the cable, determine the power that must be supplied to the motor if the load h

as been hoisted s = 10 ft starting from rest. the motor has an efficiency of ϵ = 0.76.

1 answer:

valentinak56 [21]3 years ago

6 0

Try chegg they have answers

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An object is moving at a constant velocity of 4 m/s. What is it's initial velocity?

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An hydrogen molecule consists of two hydrogen atoms whose total mass is 3.3×10−27 kg and whose moment of inertia about an axis p

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Answer:

$6.9631\times 10^{-11}\ m$

Explanation:

I = Moment of inertia = $4\times 10^{-48}\ kg m^2$

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Moment of inertia of the system is given by

$I=mr^2\\\Rightarrow I=2mr^2\\\Rightarrow 4\times 10^{-48}=3.3\times 10^{-27}\times r^2\\\Rightarrow r=\sqrt{\frac{4\times 10^{-48}}{3.3\times 10^{-27}}}\\\Rightarrow r=3.48155\times 10^{-11}\ m$

The distance between the atoms will be two times the distance between axis and rotation mass.

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Therefore, the distance between the two atoms is $6.9631\times 10^{-11}\ m$

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3 years ago

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3 years ago

Compute the power output (watts) during one minute of treadmill exercise, given the following: Treadmill grade-10% Horizontal sp

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Answer:

c. 981 watts

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Explanation:

Given:

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weight carried, $w=588.6\ N$

grade of the treadmill, $G\%=10\%$

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$P=v.w$

$P=588.6\times\frac{5}{3}$ (where grade is the rise of the front edge per 100 m of the horizontal length)

$P=981\ W$

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4 years ago