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IgorC [24]
3 years ago
14

How does the distance from a flashlight to a screen affect the size of the illuminated area?​

Biology
1 answer:
Mumz [18]3 years ago
6 0

Answer:

The bigger the distance between the lit torch and the screen, the bigger the illumination area.

Explanation:

Part of the reason is that with increasing distance the light, beam interacts with air molecules that disperse it. The more the air molecules (and note that these air molecules have kinetic energy) it interacts with, the higher the dispersion. It is also important to note that light waves have duality. They also behave like a wave. As a wave disperses from a single point (the torch), it propagates outwards in all direction. The area covered, therefore, increases with distance. Its intensity will also decrease with distance.

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Which of the following statements is true? Choose one: A. Bacterial species use a limited number of nutrient sources. B. All bac
Lubov Fominskaja [6]

Answer:

A. Bacterial species use a limited number of nutrient sources.

Explanation:

    There are two classes of nutrients that are indispensable to bacteria: macronutrients (carbon, oxygen, nitrogen, sulfur, phosphorus and hydrogen) and micronutrients (iron, zinc, manganese, calcium, potassium, sodium, copper, chlorine, cobalt, molybdenum, selenium, magnesium, among many others). But it takes more than the nutrients for them to feed, it takes the metabolism, because it is through it that they transform what they have into food.

    The absorption of nutrients to carry out the metabolism only occurs because there are growth factors (environmental) that influence the development of the bacteria. Some examples of these factors are: light, temperature, pH, oxygen and osmotic pressure. Each organism has an optimal growth temperature, or a favorable pH to successfully carry out its metabolism. This will vary from species to species.

7 0
3 years ago
Dysfunctional breathing results in an increase in the activity level of which of the following secondary respiratory muscles
xxMikexx [17]

Answer:

Answer is A. Scalene.

Explanation:

Dysfunctional breathing is a breathing disorder , which is characterized by changes in breathing pattern. It can also be described as an alteration in normal breathing.

The scalene are muscles which are found at the neck, and act as accessory muscle of respiration.

3 0
3 years ago
What can people do to lessen the effect of energy production on the pH of freshwater sources? Check all that apply.
olya-2409 [2.1K]

Answer:

2, 3, 4 should all work although possible 1 as well

Explanation:

honestly any non petroleum and coal energys ource helps pH of water

7 0
3 years ago
Read 2 more answers
How much of the parent DNA molecule makes up one daughter DNA molecule ?
nataly862011 [7]

Answer:

Watson and Crick discovered that DNA has a double helix shape, consisting of two polynucleotide chains held together by bonds between complementary bases. DNA replication is semi-conservative: half of the parent DNA molecule is conserved in each of the two daughter DNA molecules.

Explanation:

I looked it up lol

8 0
3 years ago
A roan coloration is the product of crossing a red bull and a white cow.
Alina [70]
Condominance is the answer hope it helps
4 0
3 years ago
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