7 CALCULATOR P COLOR THEME
ZOOM
7. A student is planning to conduct a lab to investigate the forces on a fan cart. The student
plans to increase the mass of the fan cart in each trial and measure the resulting
acceleration while keeping the force exerted by the fan the same.
Which of the following correctly identifies the independent and control variables in this
lab?

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

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.

Which one of the following represents the reduced forms of the two major electron carriers? nadh and fadh2 nad+ and fadh2 nad+ and fad nadh and fad