Red because it has the lowest wavelength so it has the lowest energy.
Since Goodman is unresponsive, Valerie shall check for breathing and a pulse simultaneously for no more than <u>10 seconds</u>.
<h3>What is cardiac cycle?</h3>
Cardiac cycle is a process that involves the complete heartbeat of the human heart, which comprises sequential alternating contraction and relaxation of the atria and ventricles, so as to cause blood to only flow in one direction throughout the human body and aid respiration (breathing).
As a general rule, Valerie shall check for breathing and a pulse simultaneously for for at least 5 seconds, but shouldn't be more than <u>10 seconds</u>.
Read more on pulse here: brainly.com/question/14528211
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The lens aperture is usually specified as an f-number, the ratio of focal length to effective aperture diameter. A lens typically has a set of marked "f-stops" that the f-number can be set to. A lower f-number denotes a greater aperture opening which allows more light to reach the film or image sensor.
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Thank's a lot, for the points!!! :D