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Arturiano [62]
4 years ago
11

Dentists' chairs are examples of hydraulic-lift systems. If a chair weighs 1400 N and rests on a piston with a cross-sectional a

rea of 1220 cm2, what force must be applied to the smaller piston with a cross-sectional area of 72 cm2 to lift the chair?
Physics
1 answer:
NeX [460]4 years ago
8 0

Answer:

Force applied to smaller cross section is

= 82.63 N

Explanation:

As we know

F_2 A_1 = F_1 A_2

where F1, F2 signifies the weight of the two chair in a hydraulic-lift system

And A_1, A_2 signifies the area of the two respective chairs in a hydraulic-lift system

Given -

F2=1400 N

A1 =1220 Square centimeter

A_2 = 72 Square centimeter

Substituting the given values in above equation, we get -

1400 * 72 = F1 * 1220\\F2 = 82.63

Force applied to smaller cross section is

= 82.63 N

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Answer:

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Explanation:

Problem 1

For this problem we use two equations the equations of the focal distance in mirrors

              f = r / 2

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           1 / f = 1 / o + 1 / i

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For a ray to arrive parallel to the surface it must come from infinity, whereby o = ∞ and 1 / o = 0

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The correct answer is iii

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For this problem we have two possibilities the lens is convergent or divergent, in both cases the back face (R₂) must be flat

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Cas2 Flat-concave (divergent) lens

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Why the correct answers are iii and iv

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For a thick lens the rays parallel to the first surface fall in their focal length (f₁), this is the exit point for the second surface whereby the distance to the object is o = L –f₁, let's apply the constructor equation to this second surface

          1 / f₂ = 1 / (L-f₁) + 1 / i

          1 / i = 1 / f₂ - 1 / (L-f₁)

           1 / i = (L-f₁-f₂) / f₂ (L-f₁)

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4 years ago
Suppose that instead of a long straight wire, a shortstraight wire was used. The distance from the wire to thepoint that the mag
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The magnetic field is obviously directly proportional to the current wire. From this expression.

As the resistance of the long cable is proportional to the cable length, the short cable becomes less resilient than the long cable, so going through the short cable (where filled with the same material) is a bigger amount of currents. If the field is measured at the same time, the field is therefore larger than the long wire because of the short wire.

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In a horse cart system when would there be the smallest amount of acceleration
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The total energy is the sum of all the energies present in the system. The potential energy in a system is due to its position in the system.

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Momentum also gets conserved when the two vehicles collide.

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A spring whose spring constant is 260 lbf/in has an initial force of 100 lbf acting on it. Determine the work, in Btu, required
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Answer:

A spring whose spring constant is 200 lbf/in has an initial force of 100 lbf acting on it. Determine the work, in Btu, required to compress it another 1 inch.

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eman Asked on February 19, 2018 in thermal fluid Sciences 4th solutions.

Explanation:

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3 years ago
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