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Question: The length of a 60 W, 240 Î lightbulb filament is 60 cm.
a. If the potential difference across the filament is 120 V, what is the strength of the electric field inside the filament?
b. Suppose the length of the bulbâ€TMs filament were doubled without changing its diameter or the potential difference across it. What would the electric field strength be in this case?
c. Remembering that the current in the filament is proportional to the electric field, what is the current in the filament following the doubling of its length?
d. What is the resistance of the filament following doubling its length?
You are walking along a small country road one foggy morning and come to an intersection. At what speed is the ambulance traveling
A bicycle wheel, of radius 0.31 m and mass 3.0 kg (concentrated on the rim) is rotating at 4.20 rev/s. After 42 s the wheel comes to a stop as of friction. What is the magnitude of the average torque due to frictional forces?
If the welding arm moves 3.00 centimeter west, 4.00 centimeter north, and then 6.00 centimeter east, compute the resultant displacement and the total distance traveled by the welding arm
The shock absorbers in the suspension system of a car are in such bad shape that they have no effect on the behavior of the springs attached to the axles. Each of the identical springs attached to the front axle supports 341 kg.
The lowest frequency with which the heavy string resonates is 120 Hz. If the movable support is pushed to the right by 10 cm so that the joint is placed on the pulley, what will be the minimum frequency at which the heavy string can resonate?
A boat is sailing in the ocean current with a velocity of 4.3 m/s in the positive x-direction with respect to the earth. What is the x-component of the velocity of the ocean current with respect to the boat?
Total work done on the systems Use work energy method to calculate the speed of the masses at the end
On The Apollo 14 mission to the Moon, astronaut Alan shepard hit a golf ball with a 6 iron. For how much more time was the ball in flight
Simple- the distributed to the concentrated force measured from A. Determine the reaction at fixed support A.
Two point charges, +3.00 µC and -6.10 µC, are separated by1.50 m. What is the electric potential midway between them
If I end up with a velocity of 1 m/s going west, am I heaver or lighter than you? What is your mass, and what is your final velocity?
A rigid rod of mass m3 is povited at point A, and masses m1 and m2 are hanging from it, as shown. Point A L1 m3 L2 m1 m2 (a) What is the normal force acting on the pivot point? (b) What is the ratio of L1 to L2, where these are the distances from the..
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