This diagram shows a ball rolling from left to right along a frictionless surface. In which sections will the ball be subjected to an unbalanced force?
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Section 1
Section 2
Section 3
Section 4
Section 5
O A. Sections 1 and 4
OB. Sections 2 and 5
O O O O
C. Sections 1.3, and 4
D. Sections 3 and 4

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.

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.