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A 0.50-kg mass is attached to a spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. What is the total energy of the system?
A stick is resting on a concrete step with 1/4 of its length hanging over the edge. what is the magnitude of the angular acceleration of the stick at the instant shown
Show that the sun is not at rest in the center of the solar system by calculating the distance from the Sun's center to the center of mass of the Sun-Jupiter system
A large punch bowl holds 4.00kg of lemonade (which is essentially water) at 25.0?C. A 5.00×10?2-kg ice cube at -13.0?C is placed in the lemonade. What is the amount of ice (if any) remaining
An automobile battery has an emf of 12.2 V and an internal resistance of 0.088 omegacap.gif. What is the potential difference across the headlight bulbs when they are the only load on the battery
Two parallel planar mirrors face each other. An object is placed between them at a distance x from one and 3x from the other. how far away are the second-order images from the object, in terms of x
What torque do his back muscles exert about an axis through his hips.
A 65.0 kg base runner begins his slide into second base when he is moving at a speed of 4.5 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base.
What is the period of the motion.
A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. The cars stick together. What is the speed of the wreckage just after the collision
A box slides down a rough, 25 Degree incline with a coefficient of kinetic friction between the box and incline of 0.7. What will be its speed at the bottom
An archer pulls her bowstring back 0.432 m by exerting a force that increases uniformly from zero to 227 N. What is the equivalent spring constant of the bow
An electron enters a region of space containing a uniform 0.0000227-T magnetic field. Its speed is 115 m/s, Find the radius r of the electron\'s path, and the frequency f of the motion
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