Physics, 17.01.2020 21:31 F00Dislife
Ametal tool is sharpened by being held against the rim of a wheel on a grinding machine by a force of 180 n. the frictional forces between the rim and the tool grind off small pieces of the tool. the wheel has a radius of 20.0 cm and rotates at 2.50 rev/s. the coefficient of kinetic friction between the wheel and the tool is 0.320. at what rate is energy being transferred from the motor driving the wheel to the thermal energy of the wheel and tool and to the kinetic energy of the material thrown from the tool?
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
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Physics, 22.06.2019 14:00
An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.
Answers: 1
Physics, 22.06.2019 22:00
Which of these is the best way to manage a natural resource
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Ametal tool is sharpened by being held against the rim of a wheel on a grinding machine by a force o...
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