Metal A has a coefficientof linear expansion that is three times the coefficientof linear expansion of metal B. How does their coefficient of areal expansion ,

What are the applications of electromagnetic waves

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

A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm