Aperson (mass m1=70 kg) is climbing a ladder (length l=6m, mass m2=20kg) that leans against a smooth wall (no friction between wall and ladder). a frictional force fs between the ladder and the floor keeps it from slipping. the angle between the ladder and the wall is 30. – what is the magnitude of fs so that the person can reach the top of the ladder
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Physics, 22.06.2019 14:00
Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s
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Physics, 22.06.2019 19:30
Coal contains energy. a. light b. kinetic c. chemical d. mechanical
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Physics, 23.06.2019 02:30
Intro: a solid ball of radius rb has a uniform charge density ρ. part a: what is the magnitude of the electric field e(r) at a distance r> rb from the center of the ball? express your answer in terms of ρ, rb, r, and ϵ0. part b: what is the magnitude of the electric field e(r) at a distance r express your answer in terms of ρ, rb, r, and ϵ0. part c: let e(r) represent the electric field due to the charged ball throughout all of space. which of the following statements about the electric field are true? check all that apply. e(0) = 0 e(rb)=0 limr→∞e(r)=0 the maximum electric field occurs when r=0 the maximum electric field occurs when r=rb the maximum electric field occurs as r→∞.
Answers: 1
Physics, 23.06.2019 05:10
For those who need theses answers i just took the test and got everyone of them
Answers: 3
Aperson (mass m1=70 kg) is climbing a ladder (length l=6m, mass m2=20kg) that leans against a smooth...
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