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Nikolay [14]
3 years ago
7

Choose the law that best describes the following statement: The volume of a gas is directly proportional to the number of moles

of gas when temperature and pressure stay the same.
a. Boyle's law
b. Charles's law
c. Avogadro's law
d. Combined Gas law
Physics
1 answer:
olga55 [171]3 years ago
6 0
Avogadros law is applied when temperature and pressure remain constant, and details the direct relationship between moles and volume in this circumstance
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The correct answer is c because you want to be in a specific buissness
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Why polarized sunglasses particularly effective in reducing glare?
kipiarov [429]

Answer:

Polarized glasses contains a special filter that block dangerous intensity of lights which are reflected by flat surfaces and they help in reducing glare and discomfort

Explanation:

Sunlight scatters in all the direction. But when this light strikes with the flat surfaces, then the light which is reflected by the flat surface tend to become polarized, means the reflected light will travel in all directions. This reflecting light creates a dangerous intense light that causes glare and reduces visibility.

Polarized glasses contains a special filter that block this type of dangerous intensity lights, help in reducing glare and discomfort.

Therefore, by the above discussion it can be say that the polarized sunglasses particularly effective in reducing glares.

8 0
3 years ago
High-altitude mountain climbers do not eat snow, but always melt it first with a stove. To see why, calculate the energy absorbe
Vikki [24]

Answer:

a) Q=467443.8\ J

b) Q_m=299700\ J

c) Q_2=131859\ J

Explanation:

Given:

  • specific heat of ice, c_i=2100\ J.kg^{-1}.^{\circ}C^{-1}
  • latent heat of fusion of ice, L=333000\ J.kg^{-1}
  • specific heat of water, c_w=4186\ J.kg^{-1}.^{\circ}C^{-1}

(a)

  • mass of snow, m_s=0.9\ kg
  • initial temperature of snow, T_{is}=-15^{\circ}C
  • Final temperature of the consumed mass, T_f=37^{\circ}C

<u>Now the energy absorbed from the body after eating this snow:</u>

Q=m_s.c_i.\Delta T_i+m_s.L+m_s.c_w.\Delta T_w

Q=0.9\times 2100\times (0-(-15))+0.9\times 333000+0.9\times 4186\times (37-0)

Q=467443.8\ J

(b)

<u>Energy absorbed from the body in melting the ice is the total latent heat:</u>

Q_m=m_s.L

Q_m=0.9\times 333000

Q_m=299700\ J

(c)

  • initial temperature of water, T_{iw}=2^{\circ}C
  • final temperature of water, T_{iw}=37^{\circ}C

<u>Now, the amount of energy invested by body for the water at this condition:</u>

Q_2=m_s.c_w.\Delta T_2

Q_2=0.9\times 4186\times (37-2)

Q_2=131859\ J

3 0
3 years ago
How long must a pendulum be to have a period of 4.6 5 on Neptune, where g = 11.15 m/s?​
Anon25 [30]

Answer:

5.98 m

Explanation:

T=2\pi \sqrt\frac{L}{g}

T^2=4\pi ^2L/g\\L = gT^2/(4\pi^2) = 11.15*4.6²/(4π²) = 5.98 m

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2 years ago
The distance between two cities is 185miles.Express the distance in kilometers.
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