"Consider a 2-kg ball on the end of a 1-m long cord whose mass is negligible. The ball is swung in a horizontal circle and makes 1 revolution per second. What is the centripetal acceleration of the ball?"

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell

What is a subatomic particle with a negative charge and very little mass?