Inertia can be thought of figuratively as a mass's laziness. Think of when you are lazy. When you're lazy and doing nothing, you tend to stay that way. You continue to do nothing unless prodded to do something. (Perversely, in people, laziness causes idleness and idleness causes laziness.) Well, masses are the same way. When they're inert -- meaning not moving -- they tend to stay that way because of their laziness. That laziness is called inertia. When a huge rocket laden with tons of fuel is sitting on the launch pad, it has tremendous inertia because it is massive. To get that thing moving takes a huge amount of power. But once it's moving, the rocket's inertia, instead of being a handicap, becomes an asset, because any mass, once it's moving, likes to stay moving. Moreover, as the rocket burns off fuel, its mass decreases, so less energy is required to propel it.
Friction
dark ages
you have to be in a surtain place were the magma is close to earths surface
It covers about 71% of the Earth's surface.
I believe it's laccolith - NovaNet
I believe it's laccolith - NovaNet
It isn't the size of the engine so much as the distance from the airport. You should not launch a model rocket anywhere within 15 miles of an airport. Larger rockets do, of course, pose a greater risk to aircraft, so if you are launching a G or higher engine, make sure you contact the nearest airport to verify that you are launching, and to keep planes clear of the area.
In simple terms... gravity ! Gravity is holding the air close to the surface of the Earth. The further away you are from the surface - the lower the gravity - and thus the lower the air pressure.
An underwater ridge rising close to the surface is called a reef. A reef is typically made of rock, sand or coral that lies 80 meters or less beneath low water.
the lowest layer of the atmosphere is the trosospere
there are a few places where magma come close to earths surface. Very expensive deep wells must be drilled to tap this energy.
there are a few places where magma come close to earths surface. Very expensive deep wells must be drilled to tap this energy.