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
Ira Lisetskai [31]
2 years ago
5

99 percent of the earth's atmosphere by mass is made up of only elements. These elements are

Physics
2 answers:
Alja [10]2 years ago
8 0
99% of the earth´s atmosphere by mass is made up of only these elements: Nitrogen and oxygen.

Answer: B) Nitrogen and oxygen.
diamong [38]2 years ago
7 0

The correct answer is B) Nitrogen and oxygen

Explanation:

The atmosphere refers to the gaseous layer that covers a body such as a planet. The composition of the atmosphere varies according to the planet or body and therefore the elements found on it are different. In the case of our planet, the atmosphere is mainly composed of nitrogen and oxygen as these are 99% of the atmosphere, while other elements such as carbon dioxide represent the 1% missing. Also, the atmosphere is divided into different layers according to heigh this includes the troposphere, stratosphere, among others. Thus, 99 percent of the Earth's atmosphere is made up only of nitrogen and oxygen.

You might be interested in
If carbon has an atomic number of 6, how many protons and neutrons are found in the carbon-14 atom? A.
Alex Ar [27]
The correct answer is B. 6 protons and 8 neutrons

Carbon-14 has same atomic number of 6. It has a nucleon number of 14
Atomic number = proton number = 6
Neutron number = nucleon number - atomic number = 14 - 6 = 8

Hope it helped!
5 0
3 years ago
Mathphys :( im sorry i annoy you
Vitek1552 [10]

Answer:

4. 7.59276

Explanation:

Add up the x components:

Aₓ + Bₓ + Cₓ = 5 − 1.6 + 2.4 = 5.8

Add up the y components:

Aᵧ + Bᵧ + Cᵧ = -2.4 + 3.3 + 4 = 4.9

Use Pythagorean theorem to find the magnitude:

√(x² + y²)

√(5.8² + 4.9²)

√57.65

7.59276

3 0
2 years ago
What is the specific heat of a material that has a mass of 5 grams and increases 125ºC when it receives 150J of heat?
rjkz [21]

Answer:

0.24 ? I hope that was the answer you were looking for.

Explanation:

6 0
3 years ago
Read 2 more answers
A jetliner flies at a constant speed covering 467 miles in 3.3 hours. What is the speed of the plane in miles per hour?
stellarik [79]

Answer:

141.152 miles per hour  is the speed of the plane in miles per hour

Explanation:

Speed of plane = Total distance travelled/total time taken -

v = D/t

Substituting the given values in the above equation, we get

v = 467/3.3 miles /hour

v = 141.152 miles per hour

141.152 miles per hour  is the speed of the plane in miles per hour

8 0
2 years ago
In the early twentieth century, _______ redefined psychology as "the science of observable behavior."
Paha777 [63]

Explanation:

Answer :

A. John B. Watson

4 0
2 years ago
Other questions:
  • Please help on these questions!!!
    6·1 answer
  • A string is wrapped around a uniform cylinder of mass M and radius R. The cylinder is released from rest with the string vertica
    5·1 answer
  • A wire of length L is wound into a square coil with 167 turns and used in a generator that operates at 60.0 Hz and 120 V rms val
    8·1 answer
  • Some fabrics build up better than others because
    9·2 answers
  • What is the net force required to accelerate a 884 kg car at 2 m/sec2?
    6·1 answer
  • Three thermometers are in the same water bath. After thermal equilibrium is established, it is found that the Celsius thermomete
    9·1 answer
  • Which structure is represented by letter B?
    5·1 answer
  • 12. If you cut a wooden block in half, the density will:
    9·2 answers
  • PLEASE HELP ME ALREADY!!! MAX POINTS RANDOM ANSWERS WILL BE REPORTED!!!
    14·2 answers
  • A bucket of water with weight of 50N is pulled up using a rope. The bucket is moving at
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!