3 years ago

4. Define power and explain how to determine power.

1 answer:

5 0

The rate of doing work is called power of an object.
It is also defined as the work done by an object per unit time. Mathematically, its formula is given by :
, W is work done and t is time taken.
The SI unit of power is watts and its commercial unit is kWh.
1 watt = J/s or N-m/s.

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What is the identity of the atom shown?

posledela

Answer:

Explanation:

Argon has 17 protons and 18 neutron

atomic number is the same as the protons number.

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Gelneren [198K]

Lipids are hydrophobic; They would be insoluble, group together, and float to the top

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What is the universe made of? Astronomers face an embarrassing conundrum: they don't know what 95% of the universe is made of.

Citrus2011 [14]

Answer:

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PLSSS HELP FAST

Aliun [14]

Note the formula

$\boxed{\sf Mass\:no=No\:of\:protons+No\:of\:neutrons}$

For X:-

No of protons:-

$\\ \sf\longmapsto 19-10=9protons$

It is Fluorine.

For Y:-

No of protons:-

$\\ \sf\longmapsto 16-8=8protons$

It is Oxygen.

Option D is correct

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2 years ago

A substance made of two or more elements chemically combined in a set ratio, or proportion, is called a ___.

snow_lady [41]

Hey there!

The correct answer to your question is a compound.

A substance of two or more elements chemically combined in a set ratio, or proportion, is called a compound.
This is because compounds are made of two or more elements. Table salt is an example of a compound because it is made up of the elements chlorine and sodium.

Hope this helps you.
Have a great day!

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