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2 years ago

13

If it takes 100 N to push a 300 n up an inclined plane, what was the mechanical advantage of the ramp

1 answer:

Bond [772]2 years ago

6 0

The mechanical advantage is defined as the ratio between the load (output force) and the effort (input force):
$MA = \frac{L}{E}$
for the ramp in our problem, the output force is 300 N, while the input force is 100 N, so the mechanical advantage of the ramp is:
$MA= \frac{300 N}{100 N}=3$

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borishaifa [10]

<h2>Dimension for cheap enclose = 32.45 ft x 23.52 ft</h2>

Explanation:

Area of rectangular field, A = 830 ft²

Length = l

Width = w

So we have

l x w = 830

$l=\frac{830}{w}$

Fencing costs $2 per foot for two opposite sides, and $3 per foot for the other two sides.

Cost for fencing, C = 2 x 2 x w + 3 x 2 x l = 4 w + 6 l

$C=4w+6\times \frac{830}{w}$

For minimum cost we have derivative is zero

$dC=4\times dw-6\times \frac{830}{w^2}\times dw\\\\0=4\times dw-6\times \frac{830}{w^2}\times dw\\\\w^2=1245\\\\w=32.45ft\\\\lw=830\\\\l\times 32.45=830\\\\l=23.52ft$

Dimension for cheap enclose = 32.45 ft x 23.52 ft

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2 years ago

A ball at rest starts rolling down a hill with a constant acceleration of 3.2 meters/second2. What is the final velocity of the

leva [86]

Used an app called Mephyso to do the calculation.

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3 years ago

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A 50 Ohm resistance causes a current of 5 milliamps to flow through a circuit connected to a battery. What is the power in the c

UkoKoshka [18]

Answer:0.00125 watts

Explanation:

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Current=5 milliamps

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2 years ago

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car was moving in a straight road of length 320 km it covered 240 km with an average velocity 75 km/hr then it ran out of fuel a

Stella [2.4K]

The average velocity of the car for the whole journey is 69.57 km/h.

The given parameters:

<em>Length of the road, L = 320 km</em>
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<em>Final velocity, = 100 km/hr</em>

The time spent by the before refueling is calculated as follows;

$t = \frac{d}{v} \\\\t_1 = \frac{240}{75} \\\\t_1 = 3.2 \ hours$

The time spent by the car for the remaining journey;

$t_3 = \frac{320 - 240}{100} \\\\t_3 = 0.8 \ hr$

The total time of the journey is calculated as follows;

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The average velocity of the car for the whole journey is calculated as follows;

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Learn more about average velocity here: brainly.com/question/6504879

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2 years ago

This problem has been solved!See the answerCommunication with submerged submarines via radio waves is difficult because seawater

mash [69]

Answer:

4000 km

Explanation:

as we know velocity of electromagnetic wave is c

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frequency given (f) = 76 Hz

wavelength ?

using

$c =f$ λ

λ = $\frac{c}{f}$

λ = $\frac{3 * 10^8}{76}$ ≈4000 km

so final answer λ = 4000km

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2 years ago