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A uniform disk of mass .53kg and radius 11cm is constrained to rotate on an axis about its center. On the disk are mounted masses of 9 grams at a distance of 8.14cm from the center, 22 grams at 4.95cm from the center and 35 grams at 3.41cm from the center. A uniform force of .08 Newtons is applied at the rim of the disk in a direction tangent to the disk. The force is applied for 3 seconds with the disk initially at rest.
Using energy considerations find the KE attained by the system.
The two metal objects in the figure have net charges of +68 pC and -68 pC, which result in a 28 V potential difference between them, What is the capacitance in picofarads of the system
A device used in radiation therapy for cancer contains 1.40 g of cobalt 2760Co (59.9333819 u). Determine the activity of the radioactive material
Compact fluorescent bulbs are much more efficient at producing light than are ordinary incandescent bulbs. They initially cost much more, but last far longer and use much less electricity.
You run a microwave for 6 minutes together with a 1500 W boom-box and a 2800 W space heater. What is the power of your microwave
determine the mass of liquid ammonia that boils away before thermal equilibrium. Assume an excessive amount of liquid ammonia is present and that the liquid ammonia does not react with the copper.
While a person is walking, his arms swing through approximately a 45.0 degree angle in 0.420s, What is the acceleration of a 0.900 gram drop of blood in the fingertips at the bottom of the swing
A 28 kg child plays on a swing having support ropes that are 1.80 m long. A friend pulls her back until the ropes are 43 from the vertical and releases her from rest.
Two point charges q1 = -3 nC and q2 = -27 nC are at x = 0 and x = 25 cm, respectively, and free to move. What is the sign of the third charge
Two loudspeakers emit sound waves along the x-axis. What is the phase difference between the speakers
What resistive force (assumed to be constant) does the wood exert on bullet? How long does it take the bullet to come to rest.
The tension in a string is 20.6 n and its linear density is .649 kg/m. A wave on the string travels in the -x direction. It has amplitude of 3.71 cm and a frequency of 10.6 hz. What are the speed and wavelength of wave.
A rectangular coil 21cm by 37cm has 100 turns. This coil produces a maximum emf of 69V when it rotates with an angular speed of 200rad/s in a magnetic field of strength B
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