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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 = 0.195 and the coefficient of friction between the ladder and the wall is ?2 = 0.203. Determine the maximum angle with the vertical the ladder can make without falling on the ground.
A proton has an initial speed of 3.5×10^5 m/s. What potential difference is required to bring the proton to rest
A particle moving along the x axis in simple harmonic motion starts from its equilibrium position, Determine the maximum speed and the earliest time
A 4200 kg truck is parked on a 24° slope. How big is the friction force on the truck
Two large, parallel, conducting plates are 21cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of 4.1 x10-15 N acts on an electron placed anywhere between the two plates.
A diver beneath the surface of water in a lake looks up at 27 degrees from the vertical to see a life ring floating on the surface. How far is the base of the smokestack from the life ring
A student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 3.7 kg · m2. find the resulting angular speed of the student and the stool
The electric potential energy stored in the capacitor of a defibrillator is 110 J, and the capacitance is 120 ?F. What is the potential difference across the capacitor plates
A(n) 60-g ice cube at 0°C is placed in 730 g of water at 28°C. What is the final temperature of the mixture? °C
A 60 kg woman stands at the rim of a horizontal turntable having a moment of inertia of 500 kg-m2 and a radius of 2.0 m. In what direction and with what angular speed does the turntable rotate
Consider two masses m1 and m2 at the top of two frictionless inclined planes. Both masses start from rest at the same height. However, the plane on which m1 site is at an angle of 30 degrees with the horizontal,
A 2.40 H coil with a resistance of 3.95×10^2 Ohm is in series with a 4.86×10^3 Ohm resistor. What is the peak value of the potential difference across the coil
A parallel-plate capacitor in air has a plate separation of 1.49 cm and a plate area of 25.0 cm2. Determine the change in energy of the capacitor
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