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Two uniform, solid disks are rotating freely about the same axis. Then they are linked together without the aid of any external influences. Before being connected, disk 1 had an angular velocity of 4.60 rad/s; disk 2 had an angular velocity of -8.50 rad/s. Both disks have the same mass (2.00 kg), but disk 1 has a radius of 12.0 cm, and disk 2 has a radius of 8.00 cm. At what angular velocity does the set of disks rotate after being connected?
A 2,700-kg satellite is in a circular orbit around a planet. The satellite travels with a constant speed of 6,270 m/s. The radius of the circular orbit is 8.72 × 10^6 m. What is the acceleration of satellite.
Radioactive isotopes frequently occur together in mixtures. Assume a 400g sample contains, with a half-life of 12 days, and, with a half-life of 4.5 days. If there are firstly twice as many calcium atoms as there are barium atoms, what will be the ra..
The specific heat capacity of the material use to make the block is C resolve the temperature rise that results from the collision in terms of C and the other given quantities.( suppose that no energy is transferred to the track or the surrounding..
A uniform disc of mass m and radius R is rigidly mounted coaxially with a lightweight disc of radius r = R/2, to a horizontal shaft, on which combination is free to rotate frictionless. Light strings are wound in opposite directions about the cyli..
A small block of mass m = 1.5 kg slides, without friction, along the loop-the-loop track shown. the block starts from the point P a distance h = 54 m above the bottom of the loop of radius R = 17.0 m. What is the kinetic energy of the mass at the ..
Many communications satellites orbit the earth in geostationary orbits. (They appear to remain in the same positions in the sky for observers on the earth's surface.) If such a satellite orbits at a height of 40,000 km, estimation the time delay in a..
You want to shoot a 19cm long arrow parallel to this axle and through the wheel without hitting any of spokes. Suppose that the arrow and the spokes are very thin.
A small piece of dust of mass m = 1.50g travels horizontally through an electric air cleaner in which the electric field is 498N/C. The electric force on the particle is equal to weight of the particle.
A student of weight 665 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force N on the student from seat is 566 N.
Thus, to eliminate the difficulties with motion sickness, designers must choose the distance between the astronaut's feet and the axis about which the space station rotates to be greater than a certain least value. What is this least value.
What is the electric field strength at midpoint between two disks.What is the electric field strength a point on axis 5.0 cm from one disk between them.
A string passes over a frictionless pulley and connects a 250 g block to 2.00 kg block. The inclines are frictionless. Assuming you release both masses from rest, how much time would it take the 250g to travel 2200cm next to the ramp.
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