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3 years ago

11

What humidity reading would be the driest?

1 answer:

Lunna [17]3 years ago

7 0

The weather report never tells the "humidity" of the air. It tells the
"RELATIVE humidity". That's the percent of the moisture the air
COULD hold at the current temperature that it's actually holding
right now.

If the air is completely dry, then it's holding NONE of the moisture
that it COULD hold, and the relative humidity is zero percent.

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A steel column is 3 m long and 0.4 m diameter. It carries a load of 50 MN so that 5.967 mm is elongates more. Find the modulus o

Alex787 [66]

Answer:

$E=2.0*10^{11}N/m^{2}$

Explanation:

<u>Relation between stress and Force:</u>

$\sigma=\frac{F}{A}=\frac{F}{\pi*d^{2}/4}$

<u>Relation between stress and strain:</u>

Young's modulus is defined by the ratio of longitudinal stress σ , to the longitudinal strain ε:

$E=\frac{\sigma}{\epsilon}$

$\epsilon=\frac{\Delta l}{l}$

So:

$E=\frac{F*l}{\pi*d^{2}/4*\Delta l}=\frac{50*10^{6}*3}{\pi*(0.4^{2}/4)*5.967*10^{-3}}=2*10^{11}N/m^2$

8 0

3 years ago

What is<br><img src="https://tex.z-dn.net/?f=3%20%5Csqrt%7B125x12%7D%20" id="TexFormula1" title="3 \sqrt{125x12} " alt="3 \sqrt{

Whitepunk [10]

Answer:

What are you asking me? Tex{t} x1|2?3 squ{R] oo|t?

Explanation:

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4 years ago

A light string is wrapped around the outer rim of a solid uniform cylinder of diameter 75.0 cm that can rotate without friction

anyanavicka [17]

Answer:18.5 kg

Explanation:

Given

diameter $d=75 cm$

mass of stone $m=3 kg$

velocity of stone $v=3.4 m/s$

height fallen $h=2.40 m$

using

$v^2-u^2=2as$

$(3.4)^2=2\times a\times 2.4$

$a=2.4 m/s^2$

Tension of string will Provide Torque to cylinder

$T\times r=I\times \alpha$

where $I=moment\ of\ inertia$

$\alpha =angular\ acceleration$

$T=\frac{Mr^2}{2}\times \frac{a}{r}$

$T=\frac{Ma}{2}$

and $mg-T=ma$

$mg-ma=T$

Put value of T

$mg-ma=\frac{Ma}{2}$

$mg=a(m+\frac{M}{2})$

$3\times 9.8=2.4\cdot (m+\frac{M}{2})$

$12.25=3+\frac{M}{2}$

$9.25=\frac{M}{2}$

$M=18.5 kg$

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4 years ago

A team of engineers is measuring the strength of a new material. They have measure the strength to be 112,000 Pa. if the enginee

JulsSmile [24]

Answer:

pa y5à

2.5 and 112000-25 %

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3 years ago

1. You discover that your iPod batteries keep dying after a few days. You think that the new 48 hour iBattery will work better.

stiks02 [169]

Answer:

Explanation:

It probably would

7 0

4 years ago