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3 years ago

10. (2 pts) Which two gasses effectively absorb Earth's radiation (NOTE: exclude methane)?

Physics

1 answer:

Anastaziya [24]3 years ago

3 0

Answer:

Water vapor and carbon dioxide

Explanation:

These gases then emit the infrared radiation in all directions, both outward toward space and downward toward Earth. ( Ignore the explanation if it's not helpful)

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When going from a fast speed to a slow speed how is light bent?

Zolol [24]

Toward the normal line

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3 years ago

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The population of oak trees in a forest ecosystem is decreasing. The population of squirrels will most likely _____.

kondor19780726 [428]

The answer should be ''Decrease'' to fill in the blank because squirrels usually live in trees and get food from there so without a place to live when its raining and no food to survive, than they would die and lessen their population so that's why decrease is the answer.

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3 years ago

A sample of argon has a volume of 205 mL when its temperature is -44.0 oC and its pressure is 712 mm of Hg. What would be the vo

anzhelika [568]

Answer:

231.98 mL

Explanation:

V₁ = Initial volume = 205 mL

V₂ = Final volume

P₁ = Initial pressure = 712 mmHg

P₂ = Final pressure = 750 mmhg (STP)

T₁ = Initial temperature = -44 °C = 229.15 K

T₂ = Final temperature = 273.15 K (STP)

From Combined gas law

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}\\\Rightarrow V_2=\frac{P_1V_1T_2}{T_1P_2}\\\Rightarrow V_2=\frac{712\times 205\times 273.15}{229.15\times 750}=231.98\ mL$

Volume of the argon at STP is 231.98 mL

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4 years ago

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The nucleus in an iron atom has a radius of about 4.0 10-15 m and contains 26 protons. (a) What is the magnitude of the repulsiv

zhenek [66]

Answer:

The repulsive electrostatic force between two of the protons is 14.4 N.

Explanation:

Given;

distance between the two protons, r = 4 x 10⁻¹⁵ m

charge of a proton, q = + 1.6 x 10⁻¹⁹ C

The repulsive electrostatic force between two of the protons is calculated by applying Coulomb's law;

$F = \frac{k q_1 q_2 }{r^2} \\\\where;\\k \ is \ Coulomb's \ constant = 9\times 10^9 \ Nm^2/C^2 \\\\F = \frac{9\times 10^9 \ (1.6\times 10^{-19})^2}{(4 \times 10^{-15})^2} \\\\F = 14.4 \ N$

Therefore, the repulsive electrostatic force between two of the protons is 14.4 N.

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3 years ago

Efficincy of simple machine is 60% what does it mean?<br>

umka2103 [35]

Explanation:

By the statement, Efficiency of a machine is 60% it is meant that 'The work output is 60% of the work input'. If you apply 100J of energy for a machine, it will be able to life load of 60 J only

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3 years ago

10. (2 pts) Which two gasses effectively absorb Earth's radiation (NOTE: exclude methane)?​

10. (2 pts) Which two gasses effectively absorb Earth's radiation (NOTE: exclude methane)?