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lozanna [386]
2 years ago
5

Burl the painter weighs 600 Newtons. He stands in the exact middle of his stage. There are two scale readings attached to the tw

o cords holding up the stage.
The image shows a painter standing in the middle of a scaffold that is hanging with two ropes on each end. Each rope has a spring scale.

What is the weight measured by each scale?

200 N
300 N
600 N
1200 N
Physics
1 answer:
chubhunter [2.5K]2 years ago
6 0

Answer:

T = 300 N

Explanation:

As we know that the painter is standing at the middle of the scaffold

So here the two ropes will exert same tension on the scaffold

So we will have

T_1 + T_2 = W

also we know

T_1 = T_2

so we will have

2T = W

T = \frac{W}{2}

so tension is half of the weight in both the strings

So it is

T = 300 N

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Two small aluminum spheres, each of mass 0.0250 kilograms, areseparated by 80.0 centimeters.
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Answer:

Total number of electrons

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electrons removed from each sphere

N = 5.27 \times 10^{15}

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Explanation:

As we know that moles is defined as

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n = \frac{0.0250}{0.026982}

n = 0.93

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N = 5.58 \times 10^{23}

Now number of electrons in each atom is given as

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total number of electrons in each sphere is

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Also we know that force of attraction between them is given as

F= \frac{kq_1q_2}{r^2}

1.00 \times 10^4 = \frac{(9\times 10^9)q^2}{0.80^2}

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now we have

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N = \frac{(8.4 \times 10^{-4})}{1.6 \times 10^{-19}}

N = 5.27 \times 10^{15}

Fraction of electrons transferred is given as

f = \frac{5.27 \times 10^{15}}{7.25 \times 10^{24}}

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Rod A has twice the diameter of rod B, but both are made of iron and have the same initial length. Both rods are now subjected t
Vilka [71]

Answer:

ΔLa/ΔLb = 1

Explanation:

The change in length of a solid is given by the following formula:

ΔL = α L ΔT

where,

ΔL = Change in length

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Since, the length and change in temperature for both rods are same. Also, the material of each rod is same, which implies that coefficient of linear expansion for both rods is same. Hence, the ratio of change in length of both rods will be:

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