A roofer needs to get a stack of shingles onto a roof. Pulling the shingles up manually uses 1,549 n of force. The roofer decides that it would be easier to use a system of pulleys to raise the shingles. Using the pulleys, 446 n are required to lift the shingles. What is the mechanical advantage of the system of pulleys? Explain your answer
Answers: 1
Biology, 21.06.2019 14:30, superstarsara5ouh83x
When creating a graph, the goes on the x axis and the goes on the y axis. a. dependent variable, independent variable b. experimental group, control group c. independent variable, dependent variable d. control group, experimental group
Answers: 1
Biology, 21.06.2019 19:00, lyndamahe0
2. if scientists identify an animal with bilateral symmetry and no segmentation, which phylum can it definitely not belong to? a. roundworms b. annelids c. mollusks d. flatworms
Answers: 1
Biology, 22.06.2019 01:30, nadiareese
Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve
Answers: 1
Biology, 22.06.2019 02:40, pattydixon6
Svetlana and her mother are very similar. both have blonde hair, a love of scrapbooking, blue eyes, and a thin nose. which statement most likely describes svetlana’s traits? svetlana inherited her love of scrapbooking from her mother, but her blue eyes come from her environment. svetlana inherited her blue eyes from her mother, but her love of scrapbooking comes from her environment. svetlana inherited her thin nose from her mother, but her blonde hair comes from her environment. svetlana inherited her blonde hair from her mother, but her thin nose comes from her environment.
Answers: 1
A roofer needs to get a stack of shingles onto a roof. Pulling the shingles up manually uses 1,549 n...
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