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trasher [3.6K]
4 years ago
14

Help Plzzz. (will vote brainliest)

Chemistry
2 answers:
erik [133]4 years ago
8 0

Answer:

<u>The two different celestial bodies:</u>

There about eight planets inside the solar system, as the different planets and stars hold greater significance inside the system when it comes to there position inside the solar system. While, the distances of the planets from the Sun inside the solar system also plays a great value and holds different properties with respect to each other.

  • Mercury is considered as the planet which is the most closest of all the planets to the sun inside the solar system. As it gains more amount of energy, resulting from a higher level of exposure to the Sun's ultraviolet rays. Now, the temperature,T of the planet is far much higher then any other planet inside the solar system, just because its surface receives the much high level of UV lights from the red giant.Mars is far hot for any living life to spend on it, as the planet lacks any back up for the objects to shield itself from any foreign entities or any amount of energy.
  • While, the Earth is far away from the Sun to receive the optimum level of heat from the Star inside the solar system. As earth has much distance to cover for the sunlight to reach it. Along, with which the Earth has a set of layers to shield itself from any Ultra violet rays coming from the star in the middle of the solar system. The temperatures,T value of the Earth is far less and is able to sustain life on the planet. And that is also due to the balance formed of energy,E levels in the layers of the planet.

kupik [55]4 years ago
5 0
The difference would be that Mercury has a denser, warmer atmosphere and Earth has a not that dense and gassy atmosphere. The Earth's atmosphere also has a lot of layers while Mercury's doesn't. Those would be the reasons for them both being different. Hope this helped!
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3. How has the HST managed to withstand harsh space conditions and operate for
Fantom [35]

Answer:Replacing Hubble's Main Computer NASA performed a battery of mechanical, electrical, radiation and thermal tests to guarantee that the computer would survive the trip to orbit, withstand bombardment by cosmic and solar radiation and work flawlessly in the extreme temperatures of space for the rest of Hubble's life.

Explanation:

8 0
3 years ago
Monodisperse polyacrylonitrile contains molecules with the general formula -(CH2CHCN)n-, where n is typically greater than 10,00
pentagon [3]

Answer:

7.68 × 10²⁴

Explanation:

Step 1: Calculate the mass of 1 molecule of the monomer CH₂CHCN

We will get the mass of the monomer by adding the masses of the elements.

mCH₂CHCN = 3 × mC + 3 × mH + 1 × mN

mCH₂CHCN = 3 × 12.01 amu + 3 × 1.01 amu + 1 × 14.01 amu = 53.07 amu

Step 2: Convert the mass of the monomer to grams

We will use the conversion factor 1 amu = 1.66 × 10⁻²⁴ g

53.07 amu × 1.66 × 10⁻²⁴ g/1 amu = 8.81 × 10⁻²³ g

Step 3: Calculate "n"

We will divide the mass of the polymer by the mass of the monomer.

n = 676.8 g / 8.81 × 10⁻²³ g = 7.68 × 10²⁴

6 0
3 years ago
"Alkenes" ________.are reasonably soluble in water are relatively polar compounds have lower boiling points than alcohols of sim
aleksandr82 [10.1K]

Answer:

The answer to your question is: the third option is correct.

Explanation:

"Alkenes" ________.

are reasonably soluble in water This option is incorrect, alkenes are insoluble in water.

are relatively polar compounds  This option is wrong, alkenes are not polar molecules.

have lower boiling points than alcohols of similar molecular weight This option is true, alkenes have a lower boiling point than alcohols.

both have lower boiling points than alcohols of similar molecular weight and are relatively polar compounds. This option is incorrect because is combining true with false facts.

8 0
3 years ago
Neha and Reha are playing see-saw. Neha is sitting 60 cm away from the fulcrum and Reha is sitting 40 cm away from the fulcrum.
stich3 [128]

Answer:

Reha should apply 540 N to lift Neha.

Explanation:

L = 360 N

LD  = 60 m

E =?

ED = 40m

NOW

L * LD = E * ED

360 *60 = E*40

21600/40 = E

540 N = E

4 0
3 years ago
2
tia_tia [17]

Conduction

Explanation:

If one touches a hot iron, the mode of heat transfer is conduction. Heat moves from a region of higher temperature to one at lower temperature until thermal equilibrium is established.

  • There are three modes of heat transfer which are conduction, convection and radiation.
  • Heat transfer by contact of one body with another is conduction. A hot body in contact with a cold one transfers heat by the vibration of particles of the medium.
  • This is exemplified when a hot pot is touched.

Learn more:

Heat transfer brainly.com/question/1140127

#learnwithBrainly

3 0
3 years ago
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