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An incandescent light bulb produces light because current in a tungsten filament is trnsformed into other types of energy.- identify the type of energy, other than light, produced by the incandescent light bulb.- describe how this energy is directly responsible for the light that is produced.- apply the second law of thermodynamics to this process, explaining the changes in enegry. Consider the light produced to be the work output of the bulb.
A long horizontal wire carries 26.0A of current due north. The Earth's field 22.0cm due west of the wire points north but downward, 47° below the horizontal, and has magnitude of 5.0×10-5T.
A 2.0-C charge moves with a velocity of (2.0i + 4.0j + 6.0k) m/s and experiences a magnetic force of (4.0i - 20j + 12k) N. The x component of the magnetic field is equal to zero. Find out the y component of the magnetic field.
Suppose that the dipole moment associated with an iron atom of an iron bar is 2.4 x 10-23 J/T. What is the dipole moment of the bar
A black hole is roughly defined as a an object dense enough that the speed needed for launching things from its surface must be the speed of light or greater. 3.00x108m/s. Determine the maximum radius of the earth so that it might be a black hole. Th..
A 2.80 kg gold bar at 98 degrees celcius is dropped into 0.34 kg of water at 23 degree celcius. what is the final temperature? assume the specific heatof gold is 129 J/kg
a thin rod of length 10.3m and mass 20kg is supported at a 30 degree incline. one support is 2.4m and the other is 8.3m from the lower end of the rod, Find the normal force exerted on the rod by the upper support answer in units of N
The right-side rearview mirror of Mike's car says that objects in the mirror are closer than they appear. Mike decides to do an experiment to determine the focal length of this mirror. What is the focal length of the rearview mirror
A ball of mass m traveling horizontally with velocity v strikes a massive vertical wall and rebounds back along its original direction with no change in speed. What is the magnitude of the impulse delivered by the wall to the ball?
A 150g steel ball and a 300g steel ball each hang from 1.0-m-long strings. At rest, the balls hang side by side, barely touching. To what angle does each ball rebound
Water is forced out of a fire extinguisher by air pressure, as shown in Figure P9.64 where h = 0.495 m. How much gauge air pressure in the tank
an elephant can runat a steady speed of 10m/sec and can stop in 2.5 sec what is the average acceleration of the elephant while stopping
A 4.0cm -tall candle flame is 2.0m from a wall. You happen to have a lens with a focal length of 42cm. what is the orientation of the image
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