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
Temka [501]
3 years ago
5

Meteors and Comets Video: Why is the moon covered with craters from the impact of space rocks, but the earth isn’t? Question 9 o

ptions: A.The moon doesn’t have an atmosphere to burn up the rocks before hitting the surface. B.Scientists aren’t sure. C.The moon is older than the earth. D.The moon takes the impact of space rocks so the earth doesn’t have to.
Physics
2 answers:
Sholpan [36]3 years ago
4 0

Answer: A.The moon doesn’t have an atmosphere to burn up the rocks before hitting the surface.

Explanation:

Unlike the Earth, the Moon does not have an atmosphere, this leads to at least to facts:

1) Since the atmosphere (in the case of Earth) is mainly composed of gases (including oxigen) that can make combustion; when a meteor enters in the atmosphere and gets in contact with oxigen it becomes flamable and part of it is burned and separated. Then, if the meteor was large enough, the parts that were not separated will impact on the Earth Surface.

In the Moon, meteors completely impact the surface.

2) In our planet, after the meteorite impact, the crater formed will gradually fade due to erosion caused by the atmosphere. In the case of the Moon, the craters remain intact, since there is not erosion on its surface.

Anestetic [448]3 years ago
4 0

Answer:

A

Explanation:

You might be interested in
What fraction of a piece of concrete will be submerged when it floats in mercury? the density of concrete is 2.3×103kg/m3 and de
chubhunter [2.5K]
<span>17% Any object that is floating will display the volume of fluid that matches the mass of the object that's floating. So if the object is 100% as dense as the fluid, it will just barely sink, if it's 50% as dense as the fluid, 50% will be submerged, etc. So let's see what percent of mercury's density is concrete. 2.3x10^3 / 13.6x10^3 = 0.169117647 = 16.9117647% Rounding to 2 significant figures gives 17%. So 17% of a piece of concrete will be submerged in mercury when it's floating in mercury.</span>
3 0
3 years ago
Rank the vector combinations on the basis of their magnitude.
melomori [17]

I think this is about the 5th or 6th time I've seen this question
submitted to Brainly.  So far, nobody has yet given us any of
the rest of the question ... the part that tells us something about
the vectors, so that we have some way to know their magnitudes.
So far, nada.

6 0
3 years ago
What sort of process converts the mechanized energy in the ocean into electricity?
allochka39001 [22]
I think it is the wave energy. 
Wave energy also known as the ocean energy is the energy harnessed from the ocean or sea waves. It is a source of power that comes from the endless march of the waves as they roll into the shore then back out. Using wave energy is advantageous as they are environmental friendly as there are no harmful byproducts, and also the energy from waves can be taken directly into electricity-producing machinery and used to power generators. 
5 0
3 years ago
The curved section of a horizontal highway is a circular unbanked arc of radius 740m. If the coefficient of static friction betw
fiasKO [112]
Coefficient of static friction = tan(a) = 0.4
r = 740 m
g = 9.8 m/s²
v \:  =  \:  \sqrt{gr \tan( \alpha ) }
v = √(9.8 × 740 × 0.4) m/s
v ≈ 53.85908 m/s
6 0
4 years ago
Read 2 more answers
4. show your understanding of electric and magnetic forces<br> below.
Vitek1552 [10]

Answer:

Explanation:

Electric forces exist among stationary electric charges; both electric and magnetic forces exist among moving electric charges. ... The magnetic force between two moving charges may be described as the effect exerted upon either charge by a magnetic field created by the other.

8 0
3 years ago
Other questions:
  • A 10-ohm resistor has a constant current. If 1200 C of charge flow through it in 4 minutes what
    7·1 answer
  • The windshield of a speeding car hits a hovering insect. Consider the time interval from just before the car hits the insect to
    15·1 answer
  • What is the density of an object that has a mass of 52.0 and a volume of 17.5ml?
    7·1 answer
  • When light passes straight through an object it is called
    6·1 answer
  • How many milliliters of water at 25.0°C with a density of 0.997 g/mL must be mixed with 162 mL of coffee at 94.6°C so that the r
    11·1 answer
  • One of Lex Luthor's henchman attacks Superman, shooting a rapid-fire stream of 3.3 g bullets at him at a rate of 112/min. The sp
    11·1 answer
  • What force is required to cause a 5 kg bowling ball to accelerate at 4 m/s2​
    5·1 answer
  • The unit for work can be written as __________ or as the nickname ______
    15·2 answers
  • Please answer this for 15 points
    13·1 answer
  • A) If the mass of the car is doubled (by adding passengers and cargo) by what factor must the
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!