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4 years ago

14

students may elect to take the Knowledge Test online or at Drivers Office what additional test must be taken at the licensing of

fice

1 answer:

Nutka1998 [239]4 years ago

4 0

None I mean you have to take a drivers test but you will have to take the knowldege test twice

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Describe how sound at a concert is different from the front row and the back.

satela [25.4K]

In the front is where the bass of everything comes from so it’s generally louder up there and toward the back there’s not as much bass to the music more just hearing the singer and other people screaming

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3 years ago

In a Hydrogen molecule there are a total of four charges, 2 protons in the two nuclei, and 2 electrons. How many unique charge-p

lutik1710 [3]

Answer:

The total number of charge pair without double counting is 6.

Explanation:

Given that,

Number of proton = 2

Number of electron = 2

We need to calculate the total number of charges in Hydrogen atom

Using formula for number of charges

$n= p+n$

$n =2+2$

$n=4$

Number of charge in pair is

$r = 2$

We need to calculate the total number of possible combination of pairs without double counting

Using formula of combination

$N=_{n}C^{r}$

Where, n = number of charges

r = number of charges per pair

Put the value into the formula

$N=_{4}C^{2}$

$N=\dfrac{4\times3\times 2}{2(4-2)}$

$N=\dfrac{4\times3\times 2}{2\times2}$

$N=6$

Hence, The total number of charge pair without double counting is 6.

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3 years ago

What type of materials do mechanical waves move fastest through?

MAVERICK [17]

Solids
Hope this helped:)

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4 years ago

What is the speed of a wave that has a wavelength of 0.4 m and a frequency of 10 Hz

Shkiper50 [21]

<span>speed = wavelength x frequency
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3 years ago

The pull of what is weaker when 2 objects are farther apart

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4 years ago