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?

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

What is work? how much work is done to move an object 0 meters?

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.