Which action makes use of a magnetic force? A.
A person puts a bank card in an electronic reader to buy an item.

B.
A parent measures a child’s temperature by touching a thermometer to the child’s head.

C.
A store clerk finds the price of an item by moving the item over a laser light.

D.
A student measures the mass of a book using a spring scale.

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.