Expression should appear in the blue box to compute percent error?

accepted value – experimental value
accepted value × experimental value
experimental value + accepted value
experimental value – accepted value

Explain the doppler effect in terms of frequency, wavelength, and speed.

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

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