The islands of Java and Sumatra in Indonesia are an example of A. a rift zone B. a hot spot C. an ocean ridge D. a volcanic island arc

Rotor windings in wound rotor motors are connected to? on the shaft of the motor. Brushes allow those windings to be connected to external resistors to control the speed of the motor.

What has no potential energy?

Calculate the density of a rectangular book with the edges of width 2.0 cm, length 3.0 cm, and height 4.00 cm. the book weighs 120.0 g.

Through which one of the following mediums is the velocity of a sound wave the greatest? A. Water B. Steel C. Air D. Lead

4x + 7y = - 23 8x + 5y = - 1

Halley's Comet appears around the sun about once every 76 years. It passes through the part of its orbit nearest the sun in just a few months but then moves out to great distances and takes more than half a century for the rest of its orbit.

In order to hike around a portion of Lake Allatoona, a tour guide determines that he must take his group 150 m east, 60 m north, then 75 m west.

Explain what happens to light when it is refracted at the surface of water.

A small car meshes with a large truck in a head-on collision. Which of the following statements concerning the magnitude of the momentum change during the collision is correct? (There could be more than one correct choice.

Consider the following distribution of objects: a 3.00-kg object with its center of gravity at (0, 0) m, a 4.20-kg object at (0, 6.00) m, and a 1.40-kg object at (1.00, 0) m. Where should a fourth object of mass 7.