What is the volume of new oceanic basalt added to earth’s crust each year? assume that the thickness of the new crust is 5 km, that there are 60,000 km of rifts, and that the average speed of plate motion is4 cm/y. what fraction of earth’s entire volume does this annual addition of new material represent?

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.

In which of these cases are the two wave points considered to be in phase with each other?