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3 years ago

Which process causes Earth’s surface to warm?

Physics

1 answer:

Leto [7]3 years ago

7 0

<h3><u>Answer;</u></h3>

The radiation of the sun's electromagnetic waves

<h3><u>Explanation</u>;</h3>

<em><u>The energy that drives the climate system comes from the Sun. When the Sun's energy reaches the Earth it is partially absorbed in different parts of the climate system. </u></em>
The absorbed energy is converted back to heat, which causes the Earth to warm up and makes it habitable.
Energy from the sun heats Earth's surface, warms the atmosphere, provides energy for photosynthesis, causes evaporation, drives the weather and water cycles, and powers the ocean currents.

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A line in the paschen series of hydrogen has a wavelength of 1880 nm. From what state did the electron originate?

NARA [144]

Answer:

$n=4$

Explanation:

Paschen series of hydrogen, is the series of transitions resulting from the hydrogen atom when electron jumps from a state of $n\geq 4$ to $n_f=3$ .

Emission lines for hydrogen are given by:

$\frac{1}{\lambda}=R_H(\frac{1}{n_f^2}-\frac{1}{n^2})$

$\lambda$ is the wavelength of the line emitted, $R_H$ is the Rydberg constant for hydrogen, $n_f$ is the final energy state of the electron and $n$ is the energy state where the electron transition originated.

We have $\lambda=1880nm=1880*10^{-9}m$ and $n_f=3$ . Solving for n:

$\frac{1}{\lambda R_H}=\frac{1}{n_f^2}-\frac{1}{n^2}\\\frac{1}{n^2}=\frac{1}{n_f^2}-\frac{1}{\lambda R_H}\\n^2=\frac{1}{\frac{1}{n_f^2}-\frac{1}{\lambda R_H}}\\n^2=\frac{1}{\frac{1}{3^2}-\frac{1}{1880*10^{-9}m(1.09737*10^7m^{-1})}}\\n^2=15.96\\n=4$

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4 years ago

An ideal refrigerator does 240 J of work to remove 610 J as heat from its cold compartment. (a) What is the refrigerator's coeff

Anastaziya [24]

Explanation:

It is given that,

Work done, W = 240 J

Heat removed, Q = 610 J

(a) The refrigerator's coefficient of performance is given by :

$COF=\dfrac{Q}{W}$

$COF=\dfrac{610}{240}$

COF = 2.54

(b) Let Q' is the heat per cycle is exhausted to the kitchen. It is given by :

Q' = Q + W

Q' = 610 + 240

Q' = 850 J

Hence, this is the required solution.

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4 years ago

Force is measured in units called

balu736 [363]

Answer:

Newtons

Explanation:

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4 years ago

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In its search for flying insects, a bat uses an echolocating system based on pulses of high frequency sound. These pulses are 2.

oee [108]

The amount of energy that a wave may transfer to a unit area of a surface each second is measured as the wave's intensity. Watts per square meter is a unit used to express intensity. A sound wave's frequency is equal to its rate of vibration, and its intensity is determined by its amplitude.

<h3>What is the intensity of sound waves affect the frequency?</h3>

The energy of a vibration is quantified in decibels as intensity or loudness (dB). A sound has a high intensity if it is loud.

Therefore, perceive noise as louder the higher the frequency, although frequency does not indicate how loud a sound is.

Learn more about sound waves here:

brainly.com/question/1585667

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1 year ago

Why is the reactor coolant water kept contained within the primary loop instead of allowing it to mix with the feed water and le

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For the answer to the question above, I the answer is yes, It is <u><em>both </em></u><span><u><em>contaminated and </em></u><u><em>radioactive</em></u></span><u><em> at the same time</em></u>. That's why they keep the water spinning.I hope my answer helped you. Have a nice day!

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3 years ago

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