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fiasKO [112]
4 years ago
11

How does the epidermis protect our skin

Physics
2 answers:
Darina [25.2K]4 years ago
8 0
From harmful radiation from our sun!!!!!
Ilya [14]4 years ago
6 0

The epidermis is the outermost epithelial layer over the skin. This is what you see and touch. It is made up mostly of keratinocytes.

Clearly this layer protects the layers beneath, i.e., the dermis and the subcutaneous layer which both have more delicate functions. It keeps out dirt, debris, bacteria, and basically everything else you don't want inside you. It also forms a protective barrier that protects from damage.

Within the epidermis, melanocytes create melanin to help protect from UV-rays. Lymphocytes and Langerhans cells help to neutralize pathogens.

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What is Wave motion<br> las ondas fisica <br> movimiento ondulatorio
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Answer:

Most familiar are surface waves on water, but both sound and light travel as wavelike disturbances, and the motion of all subatomic particles exhibits wavelike properties

Explanation:

8 0
3 years ago
Which of the following types of electromagnetic radiation has the longest wavelength? choose one answer.
Setler79 [48]
The right answer is red light
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demonstrate in a brief paragraph how the search to explain planetary orbits exemplifies the scientific method and then use of mo
kari74 [83]

Answer:

People firstly believe that the planets move in a circular orbit until Newton came up with his hypothesis by inventing calculus so that we could understood and calculated planetary orbits and their accuracy.

Explanation:

  • Everyone assumed the planets were perfect circles until Newton came up with an idea. Slowly people would make maps of the orbits that added circles on circles, and they could never really explain about the movement of the planet. They simply say that planets move on circles but they lacked the math to explain or prove it. Then Newton came up with an idea of inventing calculus so that we could understood and calculated planetary orbits and their accuracy.
  • Firstly people used their observations and say that the orbits looked like circles, then they developed their models and did the math, and proposed their hypothesizes which were wrong, until Newton came along and tried to match a model that used elliptical orbits and invented the math that allowed him to make predictions with it. His model worked for most planets.
  • However he could not explain about the planet Mercury for instance since it was a very strange orbit. Then after the Einstein's theory of General Relativity he could also explain very deeply about it.
  • Scientists and Astronomers made hypothesizes that there was another planet orbiting too close to the sun to see with telescopes, called Vulcan, that explained mercury's orbit before Einstein's theory. Then long after we had telescopes which was good enough to see if there was a planet orbiting closer to the sun than mercury.  
8 0
3 years ago
A disk with mass m = 9.5 kg and radius r = 0.3 m begins at rest and accelerates uniformly for t = 18.1 s, to a final angular spe
Eddi Din [679]
Ahhh this going to be confusing sorry...
1. α = Δω / Δt = 28 rad/s / 19s = 1.47 rad/s²

2. Θ = ½αt² = ½ * 1.47rad/s² * (19s)² = 266 rads

3. I = ½mr² = ½ * 8.7kg * (0.33m)² = 0.47 kg·m²

4. ΔEk = ½Iω² = ½ * 0.47kg·m² * (28rad/s)² = 186 J

5. a = α r = 1.47rad/s² * 0.33m = 0.49 m/s²

6. a = ω² r = (14rad/s)² * 0.33m = 65 m/s²

7. v = ω r = 28rad/s * ½(0.33m) = 4.62 m/s

8. s = Θ r = 266 rads * 0.33m = 88 m
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3 years ago
Each of the following would cause an increase in blood pressure except __________.
kicyunya [14]

Answer:

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