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alex41 [277]
3 years ago
9

Which of these are crystalline solid glass,sugar,rubber,plastic

Physics
1 answer:
ipn [44]3 years ago
8 0
Sugar

If you've ever seen raw sugar, you'll notice that sugar in its raw form is crystallized. Crystallized sugar dates back to the 5th  century AD.
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A scientist must only base his or her conclusions on observable evidence from investigation
Nezavi [6.7K]

is this a true of false cuz if so this it true

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3 years ago
Determine the value of n so that the vectors A and B are perpendicular: Ā = î + 5j + nk and B = 2î - j + k
Tanya [424]

If \vec A and \vec B are perpendicular, then their dot product is zero. This means

\vec A \cdot \vec B = (\vec\imath + 5\,\vec\jmath + n\,\vec k) \cdot (2\,\vec\imath - \vec\jmath + \vec k) = 2 - 5 + n = 0

Solving for n is trivial; it follows that n = 3.

6 0
2 years ago
Which wavelength would scientists use to measure the molecular structure of H2O?
Ne4ueva [31]

Answer:

To find out what water is made of, it helps to look at its chemical formula, which is H2O. This basically tells us that the water molecule is composed of two elements: hydrogen and oxygen or, more precisely, two hydrogen atoms (H2) and one oxygen atom (O).

Explanation:

7 0
3 years ago
What is the gauge pressure (in atm) in a 25.0°C car tire containing 3.81 mol of gas in a 31.5 L volume? (Enter your answer to at
bagirrra123 [75]

Answer:

Explanation:

Given

Temperature of gas T=25^{\circ}C\approx 298\ K

Volume of gas V=31.5\ L\approx 31.5\times 10^{-3}\ m^3

no of moles of gas n=3.81\ mol

Using Ideal gas Equation to find the Pressure of gas

PV=nRT

where P=Absolute Pressure

V=Volume

R=Universal gas constant

T=Temperature

P\times 31.5\times 10^{-3}=3.81\times 8.314\times 298

P=\frac{3.81\times 8.314\times 298}{31.5\times 10^{-3}}

P=299.66\ kPa

And we know Atmospheric Pressure is 101.325\ kPa

Therefore Gauge pressure is given by

P_{gauge}=P-P_{atm}

P_{gauge}=299.66-101.325

P=198.34\ kPa

4 0
3 years ago
The international governing body for badminton is the
vekshin1
<span>The Badminton World Federation</span>
4 0
4 years ago
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