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A hoop and a disk, both of 0.72- m radius and 5.0- kg mass, are released from the top of an inclined plane 3.0 m high and 7.1 m long. What is the speed of each when it reaches the bottom? Assume that they both roll without slipping. What is the speed of the hoop?
Consider a neutron star whose mass is twice the mass of the Sun and whose radius is 14.1 km. What is the radius of the geostationary orbit for this neutron star
A uniform steel beam has a mass of 720kg On it is resting half of an identical beam, What is the vertical support force at each end
A spring with 49 N/m hangs vertically next to a ruler. The end of the spring is next to the 17-{rm cm} mark on the ruler. If a 2.0-{rm kg} mass is now attached to the end of spring, where will the end of the spring line up with the ruler marks.
Two loudspeakers are placed 3-m apart. They emit 498 Hz sounds, in phase. A microphone is placed 3.2m distant from a point midway between the two speakers, where an intensity highest is recorded.
A 1kg block at the bottom of a ramp is on a compressed spring with the spring constant k=300N/m. what is the initial acceleration of the block up the ramp
The magnetic flux of a 200 turn coil changes from 1000 Mx to 16,000 Mx in 4 us. what is the absolute value of induced voltage
A very long solenoid with a circular cross section and radius r= 6.10 cm with n= 1.20E+4 turns/m has a magnetic energy density uB= 4.50 mJ/m3. What is the current in the solenoid
Find the drift velocity of conduction electrons in a gold wire of diameter 1.03 mm when a current of 0.221 A flows in it. The density of conduction electrons in gold is 5.90 X 10^28 m-3
A hand grenade is thrown with a speed of v0 30 m/s, and a 60 degree angle with x-axis, just prior to exploding. It breaks into two pieces of equal mass after the explosion. One piece has a final velocity of 40 m/s along x. Find the velocity of t..
Baseball scouts often use a radar gun to measure the speed of a pitch, What will be the increase in frequency if these waves are reflected from a 60.0mi/h fastball headed straight toward the gun
A pilot claims to have seen a UFO moving initially at a speed of about 465 m/s in an easterly direction and then, Compute the UFO's average acceleration during the turn
A chemistry student with a mass of 75 kg is riding a steadily moving Ferris wheel. What is the magnitude of the normal force on her body
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