Need help with question after number 40

Physics

1 answer:

Roman55 [17]3 years ago

8 0

Answer:

4 device 3 e e and 4 divide 3 + 5 barabar 11 33 size to 46 size 35 and size 49 browser

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A mole is defined as the number of atoms in an exact mass of which isotope?

alisha [4.7K]

Answer:

Isotope of carbon-12.

Explanation:

The MOLE is a unit of measurement of the amount of a pure substance which contains exactly the same number of chemical units which could be (Atoms, molecules etc.) posses atoms in exactly $12$ grams of isotope of carbon-12 (i.e., $6.022\times 10^{23}$ ).

So, The mole is the Notation used for an amount $6.022\times 10^{23}$ as same the 12 number is used for dozen for making count of Bananas and many more.

The $6.022\times 10^{23}$ is known as the fundamental constant names Avogadro's number ( $N_{A}$ ), It is in the honor of Italian scientist Amedeo Avogadro.

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3 years ago

True or false? a Movable pulley does not provide mechanical advantage.<br><br>False<br><br>True

shepuryov [24]

Answer:

i think its false i hope u get it correct

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3 years ago

In which of these samples do the molecules most likely have the most kinetic energy? (2 points)

Vinvika [58]

D, water vapor. Gaseous state would have more kinetic energy, they are moving faster. If you have to compare the same state, then higher temperature would have the higher kinetic energy. But if you have solid and liquid at the same temperature - then liquid would have more.

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3 years ago

Find the shear stress and the thickness of the boundary layer (a) at the center and (b) at the trailing edge of a smooth flat pl

melomori [17]

Answer:

a) The shear stress is 0.012

b) The shear stress is 0.0082

c) The total friction drag is 0.329 lbf

Explanation:

Given by the problem:

Length y plate = 2 ft

Width y plate = 10 ft