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Four objects are situated along the y axis as follows: a 1.94-kg object is at +2.98 m, a 2.98-kg object is at +2.60 m, a 2.53-kg object is at the origin, and a 3.92-kg object is at -0.491 m. Where is the center of mass of these objects?
A rod 14 cm long is uniformly charged and has a total charge of -22 c. resolve the magnitude and direction of the electric field all along the axis of the rod at a point 36.0 cm from its center.
A bar is used to lift a 100 kg block of concrete. The pivot is 1.00 m from the block. Find the mechanical advantage
If a person of mass M simply moved forward with speed V, his kinetic energy would be1/2 MV^2. However, in addition to possessing a forward motion, What is the average angular velocity of his arms and legs
Consider a bright star in our night sky. Assume its distance from Earth is 45.9 light-years (ly) and its power output is 4.00 multiply.gif 1028 W, Find the power of the starlight the Earth intercepts
A solid sphere rolls without slipping or sliding along a horizontal surface toward an incline. Calculate the kinetic energy of sphere as it rolls along the horizontal surface
An object, at the top of a very tall building, is released from rest and falls freely due to gravity. Neglect air resistance and compute distance covered by the object between times t1 = 5.5 s and t2 = 7.9 s after it is released.
A 66 kg solid sphere with a 14 cm radius is suspended by a vertical wire. What is the period of the oscillations
Find the resistance in ohms of an aluminum wire that is 15 m long and has diameter 0.0025 m. What is the new resistance of the wire
A force F acts on a 10kg object at rest for 3s and changes its velocity to 6m/s. What is the change in momentum of the object, What is the impulse of the force on the car
An X-ray tube gives electrons, which start at rest, a constant acceleration over a distance of 23cm. If their final speed is 1.3 x 107 m/s, what are the time they spend accelerating
A swimmer, capable of swimming at a speed of 1.07 m/s in still water (i.e., the swimmer can swim with a speed of 1.07 m/s relative to the water), How long does it take the swimmer to cross the river
A simple harmonic oscillator consists of the block of mass 1.90 kg attached to a spring of spring constant 196 N/m. while t = 3.00 s, position and velocity of the block are x = +0.129 m and v = +3.415 m/s.
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