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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.
In the path shown below, the locations of a car driving around a track are shown at EQUAL time intervals where ?t = 20 s. The car starts with speed 40 m/s at x0 and uniformly slows down to 20 m/s from x0 to x2. The car then travels at a constant spee..
A proton (charge = 1.6x10-19) travels through a magnetic field of 1.78T with a velocity of 2.3x105 m/sec. What is the magnitude of force experienced by the proton
An astronaut is being tested in a centrifuge. The centrifuge has a radius of 10 m and, in starting, rotates according to ? = 0.30t2, where t is in seconds and ? is in radians. what is the magnitude of the astronaut's angular velocity?
A catapult on a cliff launches a large round rock towards a ship on the ocean below. Calculate the speed at which the rock is launched
The magnetic field of an electromagnetic wave has a peak value of 5.0 × 10-10 T. What is the intensity of the wave? (c = 3.0 x 108 m/s, c = 3.00 × 108 m/s, ?0 = 4? × 10-7 T ? m/A, u0 = 8.85 × 10-12 C2/N ? m2)
A car drives straight off the edge of a cliff that is 64-m high. The police at the scene of the accident note that the point of impact is 110-m from the base of the cliff. How fast was the car travelling while it went over the cliff.
A light beam travels at 1.94×108 in quartz. The wavelength of the light in quartz is 355. What is the index of refraction of quartz at this wavelength
A slide projector needs to create a 98 cm high image of a 2.0 cm tall slide. The screen is 300 from the slide. How far should you place the lens from the slide
A charge of +q is located at the origin, while an identical charge is located on the x axis at x = 0.49 m. Where should the third charge be located
A 55 kg person riding a bike puts all her weight on each pedal when climbing a hill. The pedals rotate in a circle of radius 17 cm. (a) What is the maximum torque she exerts? (b) How could she exert more torque?
A 22 V battery is connected to a parallel-plate capacitor with a plate area of 0.28 m2 and a plate separation of 2.1 mm. What is the resulting charge on the capacitor
A biology student rides her bike around a corner of radius 25 meter at a steady speed of 8.2 m/sec. If she is not skidding, what is the magnitude of the force of friction on her bike from the road
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