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a 5.0m long ladder leans agaisnt a wall, touching it at a point 3.8 above the ground. the ladder is uniform with a mass of 15kg. the was is frictionless.
A) what is the vertical normal force acting on the ladder?
B) what is the horizontal normal force acting on the ladder?
C) what is the minimum coefficient of friction between the ladder and floor?
A charge of -2.450?C is located at (2.650m , 4.502m ), and a charge of 1.745?C is located at (-2.796m , 0). Find the electric potential at the origin
A small bird's wings can undergo a maximum displacement amplitude of 5.1 cm (distance from the tip of the wing to the horizontal). what is the oscillation frequency of the wing tips
q1. a rectangular conducting loop of wire is approximately half-way into a magnetic ?eld b out of the page and is free
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A circular loop of radius 50 mm in the plane of the paper carries a counterclockwise current of 15 A. It is submerged in a medium that has a relative permeability of 3.0 Calculate the magnitude and direction of the magnetic induction at the center of..
A 2.0 kg object moving with a velocity of +8.0 m/s collides with a 8.0 kg object that is initially at rest. What is the coefficient of restitution for this collision
You're carrying a 4.0-m-long, 23kg pole to a construction site when you decide to stop for a rest. How much force must you exert to keep the pole motionless in a horizontal position
Two thin, isolated, concentric conducting spheres of radii 5.10 cm and 14.40 cm, have net charges of 23.00 nC, What is the electric potential at 3.315 cm from the center of the spheres
In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles, What is the magnitude of Betty's force
q1. a weather vane initially at rest has a moment of inertia of 0.111 kg bull m2 about its axis of rotation. a 53.0 g
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A speeder is pulling directly away and increasing his distance from a police car that is moving at 21 m/s with respect to the ground. compute the speeder's speed with respect to the ground
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