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
SpyIntel [72]
3 years ago
15

What is mantle convection?

Physics
1 answer:
Anna007 [38]3 years ago
8 0
Mantle convection<span> is the slow creeping motion of Earth's solid silicate </span>mantle<span> caused by </span>convection<span> currents carrying heat from the interior of the Earth to the surface.

</span>
You might be interested in
Why does your heart not get tired of constantly beating throughout your body
Ipatiy [6.2K]

cardiac muscle is striated. Uniquely, the cells of this kind of muscle are joined strongly together at adherens junctions that “enable the heart to contract forcefully without ripping the fibers apart.”

6 0
3 years ago
A crate slides off the back of a flatbed truck that accelerated forward from rest. If the bed of the truck is frictionless, the
jolli1 [7]
The right answer should be B
5 0
3 years ago
Describe a life cycle of a star
vagabundo [1.1K]
Planetary Nebula are the outer layers of a star that are lost when the star changes from a red giant to a white dwarf. A star is a luminous globe of gas producing its own heat and light by nuclear reactions (nuclear fusion). They are born from nebulae and consist mostly of hydrogen and helium gas. Is this what you needed?
8 0
3 years ago
Read 2 more answers
a skier starts from rest and skis down a 82 meter tall hill labeled h1, into a valley and staught back up another 35 meter hill(
horrorfan [7]

Answer:

She is going at 30.4 m/s at the top of the 35-meter hill.    

Explanation:

We can find the velocity of the skier by energy conservation:

E_{1} = E_{2}

On the top of the hill 1 (h₁), she has only potential energy since she starts from rest. Now, on the top of the hill 2 (h₂), she has potential energy and kinetic energy.

mgh_{1} = mgh_{2} + \frac{1}{2}mv_{2}^{2}    (1)

Where:

m: is the mass of the skier

h₁: is the height 1 = 82 m

h₂: is the height 2 = 35 m

g: is the acceleration due to gravity = 9.81 m/s²  

v₂: is the speed of the skier at the top of h₂ =?

Now, by solving equation (1) for v₂ we have:

v_{2}^{2} = \frac{2mg(h_{1} - h_{2})}{m}  

v_{2} = \sqrt{2g(h_{1} - h_{2})} = \sqrt{2*9.81 m/s^{2}*(82 m - 35 m)} = 30.4 m/s    

Therefore, she is going at 30.4 m/s at the top of the 35-meter hill.

I hope it helps you!  

6 0
2 years ago
A string is stretched by two equal and opposite forces F newton each then the tension in sting is?
Arlecino [84]

Answer: The tension in the string is zero

Explanation:

3 0
3 years ago
Other questions:
  • Y=a log(ab)/(c+d) find dimension of a b c​
    12·1 answer
  • You observe a distant galaxy. You find that a spectral line, resulting from an electron transition in hydrogen, is shifted from
    15·1 answer
  • Volcanic mountains can only form on the ocean floor?<br><br> True<br><br> False
    6·1 answer
  • ____________ is the number of complete movements of a wave per second.
    5·2 answers
  • Why did thomson’s results from experimenting with cathode rays cause a big change in scientific thought about atoms?
    8·1 answer
  • What is shot-curciting​
    10·1 answer
  • WORTH 50 POINTSSSS!!!!!!!! don't lie either if you do I will report your answer and get my points back idc !!!!!!
    14·1 answer
  • Wind is ________ rushing in to fill an area of low pressure.
    10·1 answer
  • I) Give two practical<br>application of static friction<br>​
    14·1 answer
  • If the masses are not changed, but the distance of separation is tripled, what happens to the for
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!