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Problem: The tungsten filament in an incandescent light bulb has a resistance of 1.5 ohm when the bulb is not turned on at 20°C. When the bulb is connected to a voltage of 3.8 V, a current of 0.23 Amp flows through it.
Part A: What is the operating temperature of the filament?
Please show how you obtained the operating temperature of the filament.
a simple harmonic oscillator consists of a 100 g mass attached to a spring whose force constant is 104 dyne cm. the
A bartender slides a beer mug at 1.30 m/s towards a customer at the end of a frictionless bar that is 2.0m tall. The customer makes a grab for the mug and misses, and the mug sails off the end of the bar.
you are on a standard elavator . you are holding a fishing rod with a fish you just caught on the fishing line .the fish has a mass of 4kg. how much tension is in the fishing line
Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume that the masses of the chains, pulleys, and ropes are negligible and the crate is rising with an acceleration of 3.3 m/s..
Find the potential difference required to accelerate protons fromrest to 10% of the speed of light (in MV). (At this point,relativistic effects start to become significant.)
A whale of 18 meter in length and mass 4000 kilogram leaps straight out of the water such that half its body length is above the surface. determine how fast was it going at that moment
A 0.726-kg rope 2.00 meters long lies on a floor.You grasp one end of the rope ane begin lifting upward with a constant speed of 0.710m/s.
Standing on ground 3.5 from the wall of a building, you want to throw a package from your 1.6 shoulder level to someone in a second-floor window 4.5 above the ground.
In a 2.0- intense cycling race, a cyclist can loses 3.9 of water through perspiration. Estimate how much heat the cyclist loses in the process
The model airplane in figure below is flying at a speed of 19 m/s on a horizontal circle of radius 17 m, What is the net work done on the plane
Children sled down a 44m -long hill inclined at 23 degrees. At the bottom, the slope levels out. how far do the children slide on the level ground
A 3.50-kg steel ball strikes a wall with a speed of 13.0 m/s at an angle of ? = 60.0° with the surface. what is the average force exerted by the wall on the ball
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