What types of rock make up the oceanic crust and how do they form?

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?

What explosion in the upper solar atmosphere releases about as much energy as millions of 100-megaton hydrogen bombs exploding simultaneously?