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A ladder is leaning against a vertical wall. The coefficient of friction between the ladder and the horizontal surface is ?1 = 0.105 and the coefficient of friction between the ladder and the wall is ?2 = 0.103. Determine the maximum angle with the vertical the ladder can make without falling on the ground.
A copper rod hangs vertically from a fixed support. The rod is 1.55 m long and 1.55 mm in diameter. how far does the rod stretch
Jeff of the Jungle swings on a 7.6- vine that initially makes an angle of 47 with the vertical. If Jeff starts at rest and has a mass of 88 , illustrate what is the tension in the vine at the lowest point of the swing?
Two train cars are on a straight, horizontal track. One car starts at rest and is put in motion with a constant acceleration of 1.80 m/s2. Where will the cars collide
A doubly ionized carbon atom (with charge 2e) is located at the origin of the x axis, and an electron (with charge -e) is placed at x = 7.26 cm. There is one location along the x axis at which the electric field is zero. Give the x coordinate of this..
A spring (k = 60.5 N/m) hangs vertically with its top end fixed. a mass attached to the bottom of the spring then displace it 0.225 m. establishing a new equilibrium. If the mass is further displaced and then released, what's the period of the result..
Frame S' travels at speed V_1 along the x axis of frame S (in the standard configuration). Frame S'' travels at speed V_2 along the x'' axis of frame S'; (also in the standard configuration). By applying the standard Lorentz transformation twice find..
A negatively charged ball having a mass of 10 grams falls from rest in vacuum from a height of 3 meters in a uniform vertical electric field of 104 N/C. find Is the electric field pointing up or down
A styrofoam ball of mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended
A 120g cue ball moving at 0.35m/s strikes a stationary target ball with the same mass. Find the system's center-of-mass velocity before the collision
An idealized voltmeter is connected across the terminals of a 15.0 V battery, and a 75 ohm appliance is also connected across its terminals. how much power is being dissipated by the appliance
q1. the wind blows with a force of 425n north on a sail boat while the water exerts a force of 325n west on the
A 61 V. battery is connected across a 62600 ohm and a 31700 ohm resistor connected in series. What is the per cent error in the voltmeter reading
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