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3 years ago

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A piece of glass weights 25 g in air, 16.77g in water at 4C and 16.89g in water at 60C. Find the mean coefficient of cubical exp

ansion of water between 4C anf 60C, taking the coefficient of linear expansion of glass as 8*10^6

1 answer:

Oksanka [162]3 years ago

7 0

sorry i think so i dont exactly know i am sorry

Explanation:

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Melting butter is a physical change. Which best describes what is happening?

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Answer:

Option B

Explanation:

The butter forms a new arrangement of atoms i.e from solid to liquid

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3 years ago

You blow across the open mouth of a test tube and produce the fundamental standing wave of the air column inside the test tube i

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Which of these pairs of atoms are isotpoes? (Physical Science) Pair A Pair B Pair C # protons 6 8 5 2 12 12 # neutrons 8 8 5 3 1

Aleksandr-060686 [28]

Answer:

I guess that the atoms are:

Protons: 6 8 5 2 12 12

Neutrons: 8 8 5 3 13 14

Now, two atoms are isotopes if they share the same number of protons (so both atoms are the same element) but they have a different number of neutrons.

From the given options, the only two that have the same number of protons but a different number of neutrons are:

Protons 12, neutrons 13

and

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These two are isiotopes.

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3 years ago

Can some please help me with this. Will brainliest

barxatty [35]

Answer:

1)chest

2)deltoid

3)bicep

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5)quadriceps

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Explanation:

the explanation is the picture

good luck :)

hopefully, this helps

have a nice day !!

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2 years ago

Differentiate between rest and motion.

Lyrx [107]

Answer:

<em>1</em><em>. </em><em>A body is said to be at rest if its position does not change with respect to its surroundings.</em>

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