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An certain resistor dissipates 0.5 W when connected to a 3 V potential difference. When connected to a 1 V potential difference, this resistor will dissipate:
A) 0.5 W
B) 0.167 W
C) 1.5 W
D) 0.056 W
E) none of these
A playground merry-go-round has radius 2.90m and moment of inertia 2500kg?m2 about a vertical axle through its center, and it turns with negligible friction. How much work did the child do on the merry-go-round
A small spherical cavity of radius r is made in a large electrics (a dielectric material) of constant polarization P. Neglecting the effects of outer boundaries of the electrets find the electric field at the center of the cavity.
This is accomplished using two small rockets, each with 150-N thrust, that are mounted on the rim of the station.
How far below the release point is the center of mass of two stones at t = 550 ms? (Neither stone has yet reached the ground.)
Two point sources of sound waves are 60 cm apart. They produced sinusoidal sound waves in phase and with equal amplitude. Consider a large circular path around the sources.
The total kinetic energy in one mole of an ideal gas is 4,000 J. If the gas is nitrogen, what is the root mean square velocity of an individual particle in the ideal gas
A car is traveling at a constant speed of 20 m/s (about 44 mi/h) that is initially traveling due northwest rounds a corner so that after 10 s, What are the magnitude and direction of the car's average acceleration during this interval of time
A very light rod with a length of 1.95m extends straight out fromone end of a meter stick. The other end of the rod serves as apivot and the system is set into oscillation. determine the period of oscillation
A fireworks rocket is launched vertically into the night sky with an initial speed of 40 m/s. find the magnitude and direction of the second piece
a segment of wire of total length 2m is formed into a circular loop having 5 turns if the wire carries a 1.2A current determined the magnitude of the magnetic field at the center of the loop
You have a lens whose focal length is 5.17 cm. You place an object on the axis of the lens at a distance of 11.5 cm from it. How far is the object\'s image from the lens
Rubidium atoms are cooled to 0.22 uK in an atom trap. What is their de Broglie wavelength
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