Heather rolls a marble over sand paper and then over a flat table. Which statement best describes the observations she made?
When the marble is pulled, the friction on the table is greater.
When the marble is pushed, the friction is greater on the sandpaper.
The amount of friction is about the same on both surfaces.
The force of gravity pulling the marble lessens the friction between the surfaces.
Answers: 1
Chemistry, 22.06.2019 19:10
Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .
Answers: 2
Chemistry, 22.06.2019 23:00
Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]
Answers: 1
Chemistry, 23.06.2019 09:00
Describe the process that was used in this lab to create magnesium oxide, specifically identifying the type of chemical reaction. explain why the product had a higher mass than the reactant, and how this relates to conservation of matter.
Answers: 2
Chemistry, 23.06.2019 21:10
Which of the following monomers is least likely to undergo cationic polymerization? a) propylene b) styrene c) methyl acrylate d) vinyl acetate e) isobutylene
Answers: 1
Heather rolls a marble over sand paper and then over a flat table. Which statement best describes th...
English, 23.09.2020 14:01
Physics, 23.09.2020 14:01
Arts, 23.09.2020 14:01
Spanish, 23.09.2020 14:01
Geography, 23.09.2020 14:01
Mathematics, 23.09.2020 14:01
Mathematics, 23.09.2020 14:01
Mathematics, 23.09.2020 14:01
Mathematics, 23.09.2020 14:01
Computers and Technology, 23.09.2020 14:01
Arts, 23.09.2020 14:01