1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
KiRa [710]
2 years ago
13

Does the atmosphere contain 21% nitrogen in 78% oxygen

Physics
1 answer:
Alex777 [14]2 years ago
7 0

Answer:

An atmosphere is the layers of gases surrounding a planet or other celestial body. Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases

You might be interested in
Pls help I’m being timed!!
Firdavs [7]

Answer:

B

Explanation:

Heat increase molecular motion

6 0
3 years ago
Read 2 more answers
List two diseases of the muscular system.
lesantik [10]

Answer:

muscular dystrophy and  myasthenia gravis

4 0
2 years ago
Read 2 more answers
Listed following is a set of statements describing individual stars or characteristics of stars. Match these to the appropriate
Oksana_A [137]

Answer:

Red giant or super giant → very cool but very luminous

                                      → found in the upper right of the H-R diagram.

Main sequence →The majority of stars in our galaxy

                        → Sun, for example

                        → a very hot and very luminous star

White dwarfs → very hot but very dim

                     → not much larger in radius than earth  

Explanation:

Giant:

When the stars run out of their fuel that is hydrogen for the nuclear fusion reactions then they convert into Giant stars.That's why they are very cool. Giant stars have the larger radius and luminosity then the main sequence stars.

Main Sequence:

Stars are called main sequence stars when their core temperature reaches up to 10 million kelvin and their start the nuclear fusion reactions of hydrogen into helium in the core of the star. That is why they are very hot and luminous. For example sun is known as to be in the stage of main sequence as the nuclear fusion reactions are happening in its core.

White dwarfs:

When the stars run out of their fuel then they shed the outer layer planetary nebula, the remaining core part that left behind is called as white dwarf. It's the most dense part as the most of the mass is concentrated in this part.

6 0
3 years ago
A 10.0 kg weather rocket generates a thrust of 230 NN . The rocket, pointing upward, is clamped to the top of a vertical spring.
blondinia [14]

Answer: 0.2m

Explanation: Firstly only the Rocket's Weight Compress the spring which can be found by

F_r=M_r*g\\F_r=10*9.81\\F_r=98.1N

According to Hooks Law

F_r=k*x\\x=F_r/k\\x=98.1/480\\x=0.2m

The part b and c of this question is done in the attachment

7 0
3 years ago
calculate the acceleration of gravity on the surface of kepler-62e Kepler-62e is an exoplanet that orbits within the habitable z
AnnyKZ [126]

The acceleration of gravity is proportional to the planet's mass, and inversely proportional to the square of the planet's radius.

So on this particular planet, the acceleration of gravity will be

(Earth gravity) x ( 3.57 / 1.61²)

That's  (9.81 m/s²) x (1.377)  =  <em>13.51 m/s²</em>

4 0
3 years ago
Other questions:
  • A small dog is trained to jump straight up a distance of 1.2m. How much kinetic energy does the 7.2kg dog need to jump this high
    6·2 answers
  • A student is preparing to bake a cake at home and places several ingredients on the countertop to use. First he preheats the ove
    11·1 answer
  • If two lightbulbs are parallel to each other, they have the same brightness. If the same two lightbulbs are put in series with e
    13·1 answer
  • the distance between 2 station is 5400 m find the time taken by a train to cover this distance, if the train travels with speed
    15·2 answers
  • Is a frame of reference usually moving
    6·1 answer
  • Descirbe what has happen to earths continents today
    15·1 answer
  • Hurry pls I need help
    8·1 answer
  • A person pushes a large 42.9 kg box at a constant velocity of 9 m/s across a horizontal floor for 3.8 s. Find the
    13·1 answer
  • Disordered eating is often __________.
    6·2 answers
  • What year did Badminton become a full-medal Olympic sport?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!