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White raven [17]

3 years ago

8

Which is the best desciption of a molecule?

1 answer:

balandron [24]3 years ago

8 0

A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms.

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Which condition is caused by a slightly shortened eyeball?

mihalych1998 [28]

The answer is C. Farsightedness. I hope this helps

7 0

3 years ago

Electric energy used in the home is measured in a unit called the _______.

Serga [27]

Answer:

Kilowatt per hour

Explanation:

The energy is equal to the power by time.

$E=\frac{P}{t}$

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3 years ago

Suppose the minimum uncertainty in the position of a

Anika [276]

Answer:

The minimum uncertainty in its speed is greater than $6.52\times 10^4\ m/s$ .

Explanation:

It is given that,

Speed of the particle, $v=4.1\times 10^5\ m/s$

We need to find the minimum uncertainty in its speed. It can be calculated using uncertainty principle as :

$\Delta x.\Delta p\ge \dfrac{h}{2\pi}$

Since, p = mv

$\Delta x.\Delta (mv)\ge \dfrac{h}{2\pi}$

$(\dfrac{h}{mv}).(m\Delta v)\ge \dfrac{h}{2\pi}$

$\dfrac{\Delta v}{v}\ge \dfrac{h}{2\pi}$

$\Delta v\ge \dfrac{v}{2\pi}$

$\Delta v\ge \dfrac{4.1\times 10^5}{2\pi}$

$\Delta v\ge 6.52\times 10^4\ m/s$

So, the minimum uncertainty in its speed is greater than $6.52\times 10^4\ m/s$ . Hence, this is the required solution.

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3 years ago

Use the drop-down menus to complete each sentence.

qaws [65]

Answer:b

Explanation:

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According to the law of conservation of energy, which changes would

Svetach [21]

I think the answer is a that what i think

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3 years ago

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