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By means of a rope whose mass is negligible, two blocks are suspended over a pulley, as the drawing shows. The pulley can be treated as a uniform solid cylindrical disk. The downward acceleration of the 44.0-kg block is observed to be exactly one-half the acceleration due to gravity. Noting that the tension in the rope is not the same on each side of the pulley, find the mass of the pulley.
For the transmutation reaction 1H + 93Y -> ___ + 4He, What is the element abbreviation of the daughter atom
A small grinding wheel has a moment of inertia of 4.0 × 105 kgm2. What net torque must be applied to the wheel
A 237 g mass is connected to a light spring of force constant 3 N/m that is free to oscillate on a horizontal, frictionless track. What is the maximum acceleration of the mass
An air-track glider attached to a spring oscillates between the 11.4 cm mark and the 57.27 cm mark on the track. What is the maximum speed of the glider in cm/s
as a fish jumps vertically out of the water assume that only two significant forces act on it an upward force f exerted
A space traveler moving at a speed of 0.62c with respect to the earth makes a trip to a distant star that is stationary relative to the earth. He measures the length of this trip to be 7.9light-years.
The resistivity of silver is 1.59 x 10-8 Ω•m. The length of a silver wire is 35 meter and the radius is 5.80 x 10-4 meter. Evaluate the resistance of the wire
an object is in front of a spherical mirror; the image of the object is upright and twice the size of the object, and it appear to be 12cm behind the mirror. what is the object distance
A wooden block of mass 2kg, initially stationary is dragged by a force F with magnitude 20 N along a frictionless incline with an angle 0=30 degrees, What is the wooden block acceleration
A rescue helicopter lifts a 60 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2, How much work is done by the person's weight
As the drawing illustrates, two disks with masses m1 and m2 are moving horizontally to the right at a speed of v0. They are on an air-hockey table, find the velocity of disk 2 at that moment
questionat a construction site a 65.0 bucket of concrete hangs from a light but strong cable that passes over a light
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