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Physics, 22.06.2019 02:00
The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s
Answers: 3
Physics, 22.06.2019 03:00
Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below.your friend goes first,and you follow after he has dropped a distance of 2.0m.when your friend hits the water,is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.
Answers: 2
Physics, 22.06.2019 04:30
In a system, when potential energy decreases, then entropy also decreases. true false
Answers: 3
Study the balanced chemical equations for the reactions of methane (CH4) with oxygen and hydrogen wi...
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