If tight scissors have an efficiency of 50 percent, half of your work is wasted due to
a. the output force
b. the input force
c. friction
d. changes in direction

What is the standard unit of measure for acceleration?

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.

When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa