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gogolik [260]
2 years ago
12

Why do different atoms or molecules preferentially absorb different wavelengths of light?

Physics
1 answer:
Paladinen [302]2 years ago
6 0

Answer:

The electrons in an atom can only occupy certain allowed energy levels. ... Only certain energy levels are allowed, so only certain transitions are possible and hence specific wavelengths are emitted when an electron drops to a lower energy level.

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Which activity performed by a medical professional is primarily based on an understanding of physics?
Vikentia [17]
B) using a blood pressure monitor to find a patient's blood pressure.

Hope this helped!
8 0
3 years ago
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A person walks first at a constant speed of 5.40 m/s along a straight line from point to point and then back along the line from
rosijanka [135]

Answer: The average speed over the entire trip is 3.94 m/s

Explanation:

As we know : speed=\frac{distance}{time}

Let the distance of straight line from point to point be = d

Total distance covered = 2d

Time taken to cover the forward journey = \frac{d}{5.40}

Time taken to cover the backward journey = \frac{d}{3.10}

Total time for the journey = Time taken to cover the forward journey  + Time taken to cover the backward journey  = \frac{d}{5.40}+\frac{d}{3.10}

Average speed = \frac{\text {total distance}}{\text {total time}}=\frac{2d}{\frac{d}{5.40}+\frac{d}{3.10}}=3.94m/s

Thus  average speed over the entire trip is 3.94 m/s

6 0
3 years ago
Which resistor dissipates the most power, the one with the greatest resistance or the one with the least resistance? explain why
Klio2033 [76]
The power dissipated by a resistor is equal to
P=R I^2
where R is the value of the resistance and I is the current flowing through the resistor. From the formula, we can see that the larger R, the larger the dissipated power, so the greatest resistance dissipates more power.
5 0
3 years ago
PLEASE PLEASE HELP!!
boyakko [2]

Answer:

you have patience the distance.

Explanation:

the train leaves at 6.30.

3 0
2 years ago
Determine the centripetal force acting upon a 40-kg child who swings in a circle at a speed of 3 m/s. The radius of the swing is
Angelina_Jolie [31]
That would be  mv^2/r  = 40*3^2 / 20  =   18 N
4 0
3 years ago
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