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Pie
3 years ago
9

on cloudless nighs, heat escapes from our planet and goes into empty space A.conduction B.convection C.radiation

Physics
2 answers:
Ivanshal [37]3 years ago
6 0
Convention.

On cloudless nighs, heat escapes from our planet and goes into empty space <span>convection.</span>
PIT_PIT [208]3 years ago
5 0
On cloudless nighs, heat escapes from our planet and goes into empty space is an example of convection.
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tiny-mole [99]

Personality test is aimed at being able to decipher the nature of human personality. The opposite of judging in a personality test is prospecting.

<h3>What is a personality test?</h3>

The term personality test is aimed at being able to decipher the nature of human personality through a  Personalities Test.

In this personality test different personality types have their respective opposites. The opposite of judging in a personality test is prospecting.

Learn more about personality test: brainly.com/question/8789865

6 0
2 years ago
Read the paragraph below and answer the question that follows:
elena-s [515]

B. Helium because it is constantly being made in the sun

Explanation:

From the given paragraph, we can conclude that helium is the most common element in a star such as the sun because it is constantly being made.

In the nuclear fusion process that results in the production of helium, hydrogen nuclei are the reactants and helium is the product.

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  • It is a series of chain reaction that uses a fuel of hydrogen to produce helium.

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Transmutation brainly.com/question/3433940

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8 0
2 years ago
What is the Force acting on a ball if the mass of the ball is 2 kg and the acceleration of the ball is 5 m/s2?
hjlf

Answer:

please find attached file

Explanation:

5 0
3 years ago
A heat engine exhausts 8900 j of heat while performing 2800 j of useful work. part a what is the efficiency of this engine?
Anuta_ua [19.1K]
Given: Heat Qout means useful work = 2800 J

           Heat Qin = 8900 J

Required; Efficiency = ?

Formula: Efficiency = Qout/Qin = x 100%

                               = 2800 J/8900 J = 0.3146 X 100 %

               Efficiency = 31.46%


7 0
3 years ago
How many protons are in Calcium? (* Hint: The Atomic number of Calcium is 20).
ryzh [129]

Answer:

The answer to your question is: 20

Explanation:

Atomic number is the number of proton and atom has. Each element has a specific number of protons, if the number of protons change, then this is a new element.

Mass number is the number of protons and neutrons and atom has.

                       Mass number = protons + neutrons

Data

Number of protons = ?

Atomic number = 20

Then,

           atomic number = number of protons = 20

3 0
2 years ago
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