What is the sequence of energy transformations associated with a hydroelectric dam?

The mean distance of an asteroid from the Sun is 3.90 times that of Earth from the Sun. From Kepler's law of periods, calculate the number of years required for the asteroid to make one revolution about the Sun.

What is the center of a tornado called A. the eye B. The center C. The middle road D. The vortex

If F1 is the magnitude of the force exerted by the Earth on a satellite in orbit about the Earth and F2 is the magnitude of the force exerted by the satellite on the Earth, then which of the following is true? a. F1 is much greater than F2 b.

challenge: A 3 kg model airplane is traveling at a speed of 33 m/s ... The operator then increases the speed up to 45 m/s in 2 seconds. How much force did the engine need in order to make this change?

The diameter of earth is 12,756 km. How many times greater the suns diameter than the diameter of earth

1.) A circuit has a current of 0.5A and a resistence of 8 ohms. What is the resistence? 2.) A circuit has a voltage of 9V and a current of 3A, what is the resistence?

What is the source of energy for the process of evaporation?

How could you compare the energy carried in two different longitudinal waves

The instantaneous velocity of an object is the blank of the object with a blank

Which of the following best describes the earth's average surface temperature for the past 900,000 years? A. a steady warming trend B. fairly steady temperatures until recently C. prolonged periods of cooling and warming D.