Give an argument of a formation of a wave on a stretched string. tell what happens when a wave pulse hits the end of a string for extreme cases, a string being attached to a mass and friction free ring on a rod. develop a disscusion on wave in a particular physical system.

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

The precision of a laboratory instrument is ± 0.05 g. the accepted value for your measurement is 7.92 g. which measurements are in the accepted range? check all that apply. 7.85 g 7.89 g 7.91 g 7.97 g 7.99 g

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