Which explains earthquakes and volcanic eruptions?

global positioning theory
lithospheric theory
plate tectonics theory
nebular theory

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

Adisk with a radius of r is oriented with its normal unit vector at an angle q with respect to a uniform electric field. which of the following would result in an increase in the electric flux through the disk? check all that apply? a. increasing the area of the disk b. decreasing the given orientation angle of the disk c. decreasing the strength of the electric field d. increasing the given orientation angle of the disk, but not exceeding an angle of 90

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