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irinina [24]
3 years ago
7

Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron falls from the n = 7 to the n

= 4 principal energy level.
SAT
1 answer:
jarptica [38.1K]3 years ago
8 0

Answer:

The wavelength of the light emitted by a hydrogen atom for the given transition is 2166 nm.

Explanation:

The energy of nth energy levels of the H atom is given as:

Energy of the seventh energy level =

Energy of the seventh energy level =

Energy of the light emitted will be equal to the energy difference of the both levels.

Wavelength corresponding t

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Mr. Waterman has $5, $10, and $25 gift certificates to
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Answer:

The right answer minimum number of $5 cetificates that each nephews and nieces will get is 2 and maximum number of $5 certificates that each will get is 4.

Explanation:

The minimum number of $5 certificates that each nephews and nieces will get is 2 because he can add $25 + $10 = $35 , he has now capacity of $20 ($55 - $35) in which he can add one more $10 the he must have to add 2 of $5 certificates.

The Maximum number of $5 certificates he can give is 4 because again when he adds every certificate once he has capacity of $20 ( $55 - $25 - $10). He can now add 4 * $5 = $20 so he can get $55.

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3 years ago
Hardy inc. Has two operating departments (1 and 2) and is considering renting a new machine to help automate the printing proces
Nuetrik [128]

The amount of the cost will be allocated to department is $6,900

<h3>What are operating costs?</h3>

Operating costs are known to be the current or the present expenses that are often incurred from the daily running of a business. They includes selling, administrative expenses, etc.

Note that in the above, the Total rental cost allocation to department 1 are:

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So you then sum up the both amount together:

= $2,500 + $4,400 = $6,900

Therefore, the cost that needs to be allocated to Department 1 is $6,900

Learn more about Hardy inc. from

brainly.com/question/18882378

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Bob bought school supplies for school. A mechanical pencil for $2.53, a 5 subject notebook for $6.10, glue for $.50 and a pencil
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3 years ago
What value of k will make the system y-5x=-1 and y=kx +3 inconsistent?
umka21 [38]

Answer:

Inconsistent parallel lines is easiest pick k so the slopes (k) is the same as the first line.

It would be helpful to rewrite y-5x=-1 in y=mx+b where m is slope and b is y-intercept

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Now  consistent intersecting lines are easy now you know the parallel solution is inconsistent so you can choose k to be what ever you want as long as it isn't 5, to make perpendicular just use -1/5.

Explanation:

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To be a research scientist in a food science, agricultural, or natural resources field, a person should have which degree?
Nataliya [291]
Do we have the same iternam
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