Physics, 18.03.2021 21:50 shahedalahmad2017
5. A wheelbarrow contains two simple machines—a lever and a wheel and axle. For a certain
wheelbarrow, the lever has an efficiency of 72 percent, and the wheel and axle has an efficiency
of 64 percent. What is the overall efficiency of the wheelbarrow?
Answers: 2
Physics, 21.06.2019 23:30
Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement
Answers: 3
Physics, 22.06.2019 00:00
An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge
Answers: 2
Physics, 22.06.2019 10:00
Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points
Answers: 1
5. A wheelbarrow contains two simple machines—a lever and a wheel and axle. For a certain
wheelbarr...
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