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A 12 meter long uniform ladder is leaning against a frictionless wall at an angle of 50o above the horizontal. The ladder has 30 kilogram mass. When a 45 kilogram boy is standing 5 meter up along the ladder, obtain the magnitude of the force exerted by ladder on wall?
According to newtons third law, each team in a tug of warpulls with equal force on the otehr team. what then determines which team will win
A 13.5?F capacitor is connected to a power supply that keeps a constant potential difference of 26.0V across the plates. By how much did the energy change during the insertion
Solve the algebraic expression by using power rules.
Two positively-charged particles, each having a charge of 3.00 µC, are placed on the x axis. Find the electric force on a -3.00 µC charge placed on the y axis at y = 0.800 m
How would you describe the discoveries of Benjamin franklin, Robert millikan, cgarles-augastin de coulomb and Ernest ruthford
Bob, of mass m, drops from a tree limb at the same time that Esther, also of mass m, begins her descent down a frictionless slide. If they both start at the same height above the ground, which is true about their kinetic energies as they reach the gr..
Quentin is lifting a 10 kg dumbbell by pulling upward on it with a 108.1 N force. What is the acceleration of the dumbbell
A skateboarder slides down a frictionless ramp inclined at an angle of 30 degree to the horizontal. Obtain how far up the second incline will him go
A lens appears greenish yellow (λ = 570 nm is strongest) when white light reflects from it. What minimum thickness of coating (n = 1.33) do you consider is used on such a glass (n =1.52) lens? Why?
A toroid having a 7.2 cm square cross section and inside radius of 22.8 cm has 170 turns of wire and carries a current of 1.8 A. What is the magnetic flux through the cross section
Find the modulation index corresponding to the given trapezoidal pattern for the AM signal.
A hydraulic jack is made with a small piston 1.2 cm indiameter that is used to move a large piston 6.1 cm in diameter. how heavy aload can he lift with the jack
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