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3 years ago

Why do skiers often wear sunglasses while they are skiing

2 answers:

6 0

They do it for personal protection, while they are skiing rocks can fly though and without personal protection the can get injured or even killed. That why they wear glasses for personal protection to avoid being injured in the eye.

For example if you are cooking and you want to take something of the oven, you would likely wear some hand gloves to avoid burns, that's the same with skiers.

yulyashka [42]3 years ago

4 0

There is a lot of glare off of the ice, due to the sun and it also is always good to have eye protection in case you fall face first :P

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How is energy and work related.<br>

Anna007 [38]

Answer:

Varies

Explanation:

They both relate to the process of doing something.

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3 years ago

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You are asked to design a cylindrical steel rod 50.0 cm long, with a circular cross section, that will conduct 170.0 J/s from a

zepelin [54]

Answer:

You are asked to design a cylindrical steel rod 50.0 cm long, with a circular cross section, that will conduct 170.0 J/s from a furnace at 350.0 ∘C to a container of boiling water under 1 atmosphere.

Explanation:

Given Values:

L = 50 cm = 0.5 m

H = 170 j/s

To find the diameter of the rod, we have to find the area of the rod using the following formula.

Here Tc = 100.0° C

k = 50.2

H = k × A × $\frac{[T_{H -}T_{C} ] }{L}$

Solving for A

A = $\frac{H * L }{k * [ T_{H}- T_{C} ] }$

A = $\frac{170 * 0.5}{50.2 * [ 350 - 100 ]}$

A = $\frac{85}{12550}$ = 6.77 × $10^{-3}$ m²

Now Area of cylinder is :

A = $\frac{\pi }{4}$ d²

solving for d:

d = $\sqrt{\frac{4 * 0.00677 }{\pi } }$

d = 9.28 cm

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4 years ago

If you hold a 50 kilogram barbell above your head for 3 seconds and

aalyn [17]

Answer:

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3 years ago

Humans must depend on the environment for their survival.<br> True<br> False

Alisiya [41]

Answer:

true

Explanation:

with out trees we would have no air with out animals the envirounment would slowly decay

8 0

3 years ago

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How does the location of the outer planets explain their composition and characteristics?

Elena-2011 [213]

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