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
tangare [24]
3 years ago
9

Auroras occur in the _______. a. troposphere b. stratosphere c. mesosphere d. thermosphere

Physics
2 answers:
Minchanka [31]3 years ago
8 0

Answer;

-Thermosphere

Explanation;

-The thermosphere lies between the exosphere and the mesosphere.It is a region of increasing temperature in Earth’s atmosphere that is located above the mesosphere.

-The thermosphere greatly helps in protecting the earth and making space exploration and modern forms of communication possible. It also supports and protects life on the planet. It recycles water, absorbs the sun's energy, and creates a moderate temperature.

-The aurora (Northern Lights and Southern Lights) mostly occur in the thermosphere.  It is a  natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, especially near the northern or southern magnetic pole. The effect is caused by the interaction of charged particles from the sun with atoms in the upper atmosphere.  

const2013 [10]3 years ago
5 0

the answer is thermosphere

You might be interested in
An aluminum cup of 150 cm3 capacity is completely filled with glycerin at 23°C. How much glycerin will spill out of the cup if t
AVprozaik [17]

Answer:

1.19cm^3 of glycerine

Explanation:

Let Vo= 150cm^3 for both aluminum and glycerine, using expansion formula:

Volume of spill glycerine = change in volume of glycerine - change in volume of aluminum

Volume of glycerine = coefficient of volume expansion of glycerine * Vo* change in temperature - coefficient of volume expansion of Aluminum*Vo* change temperature

coefficient of volume expansion of aluminum = coefficient of linear expansion of aluminum*3 = 23*10^-6 * 3 = 0.69*10^-4 oC^-1

Change in temperature = 41-23 = 18oC

Volume of glycerine that spill = (5.1*10^-4) - (0.69*10^-4) (150*18) = 4.41*10^-4*2700 = 1.19cm3

3 0
3 years ago
Which of the following is not a fluid?
Alinara [238K]
The choices are confusing. Air, oil, and alcohol are fluids at any reasonable temperature. Dry cement is not.
4 0
3 years ago
Read 2 more answers
A 99.1-kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is μk =
Stels [109]

Answer:

628.022466 N

8.61 m/s

Explanation:

m = Mass

\mu = Coefficient of friction

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

g = Acceleration due to gravity = 9.81 m/s²

F_f=\mu mg\\\Rightarrow F_f=0.646\times 99.1\times 9.81\\\Rightarrow F_f=628.022466\ N

Magnitude of frictional force is 628.022466 N

F=ma\\\Rightarrow a=\frac{F_f}{m}\\\Rightarrow a=\frac{628.022466}{99.1}\\\Rightarrow a=6.33726\ m/s^2

v=u+at\\\Rightarrow 0=u-6.33726\times 1.36\\\Rightarrow u=8.61\ m/s

Initial speed of the player is 8.61 m/s

4 0
3 years ago
How do you calculate acceleration
AfilCa [17]
A=f/m
Example a=10/2
A=5
7 0
3 years ago
Read 2 more answers
You exert of force of 75 newtons on a rock. You push and you push, but you can't budge it. You are exhausted! How much work did
sergiy2304 [10]
You performed 0 work for the fact that work means the distance of movement made on an object not the amount of force it is exposed to. 0 work because it didn't move
7 0
3 years ago
Other questions:
  • If you have 500 g of water at 25oc and wish to heat it to 74o c, what is the specific heat of water
    14·1 answer
  • What is the relationship between the frequency and the pitch of a sound?
    14·2 answers
  • Which statements describe the factors affecting the strength of an electrical force? Check all that apply.
    10·1 answer
  • Can someone help me a bit on this? Will mark brainliest. ( no physical science option soooo)
    11·1 answer
  • A roller coaster has a mass of 650 kg. It sits at the top of a hill with height 78 m. If it drops from this hill, how fast is it
    13·1 answer
  • Which of the following provides the best analogy for an electron in an atomic orbital?
    15·2 answers
  • A ball rolls over the edge of a platform with only a horizontal velocity. The height of the platform is 1.6 m and the horizontal
    15·1 answer
  • 1. The saw cut that is made at 450-75° angles to the annual rings is called:
    12·1 answer
  • PROJECT: METRIC RECIPE The movement to have metric measurements as the only unit of measurement in the United States is gaining
    9·1 answer
  • The earth's gravity is pulling on you. Are you pulling on the earth? Explain why or why not.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!