Why the sun cannot be a huge ball of fire?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Describe uniform velocity and variable velocity in short

This chart shows characteristics of three different types of waves. which statement is best supported by the information in the chart? wave x and wave y are mechanical waves, and wave z is an electromagnetic wave. wave x and wave y are electromagnetic waves, and wave z is a mechanical wave. wave x and wave z are electromagnetic waves, and wave y is a mechanical wave. wave x and wave z are mechanical waves, and wave y is an electromagnetic wave.