On the sun is the corona above the photosphere?

Explain how plate tectonics have changed earth’s surface over time. include the role of plate tectonics in the creation of landforms.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)