1 horsepower is equivalent to 0.7457
Kilo Newton. I am hoping that this answer has satisfied your query and it will
be able to help you in your endeavor, and if you would like, feel free to ask
another question.
The power generated by the students will be .
•Work done is equal to
Mgh = 90*9.8*1.5
1587.6 j
thus power is equal to work done by time
1587.6/3
529.2 j/secs
I got 35 lbs because your doubling the support
Upper mantle
The theory of the plate tectonics uses the convection cells in the upper mantle layer as the foundation for the movement of the continents.
To put it simple the process is explained like the convection cells create a lot of pressure, that pressure, supported by the high temperatures and magma, influence the crust above, and manage to crack it on certain places. As the crust cracks, it becomes a separate entity, and under the enormous force from bellow it slowly moves into a particular direction, and that is actually the movement of the tectonic plates.
Assuming that the earth is the center of all coordinates. The center of mass of the earth will be located at the coordinate 
To calculate the center of mass of the Earth-moon we require to proceed to the calculations given by,
Where
= Mass of earth
= Distance to center of mass for earth
= mass of moon
= Distance from moon to earth (to center of mass)
Replacing the values we have
We extrapolate this procedure to the sun, but now including the three bodies, in this way
So we have the two center of mass:
<em>System Earth-Moon equal to 
km</em>
<em>System Earth-Moon-Sun equal to 
km</em>
