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Several 60W incandescent light bulbs are wired in one circuit protected with a 15A breaker. The voltage of the household power is 115 V.
1. What is the resistance of the filament in the light bulb?
2. What is the maximum number of light bulbs can be connected to the circuit?
To focus a camera on objects at different distances, the converging lens is moved toward or away from the film, Over what distance must the lens be movable
A football is kicked straight up into the air; it hits the ground 3.4 later. With what speed did it leave the kicker's foot
An iron tower in is 307 meters tall on a cold day (T = -8.3 degrees Celsius). What is its height of the tower on a hot day
During the spin cycle of your clothes washer, Find the angular displacement of the tub during a spin of 82.9 s
Calculate the magnetic moments that are possible for the n=3 level of Hydrogen, making use of the quantization of angular momentum. You may neglect the existence of spin. Compare this with the Bohr prediction for n=3.
A cooling fan is turned off when it is running at 800rev/min . It turns 900 revolutions before it comes to a stop, What was the fan's angular acceleration, assumed constant
An 9.00 point mass and a 14.0 point mass are held in place 50.0 apart. Find the magnitude of the acceleration of the particle and direction
Find the frequency in terahertz of visible light with a wavelength of 463 nm in vacuum
Two kids sit on a 3.0 meter long seesaw. Kid 1 is 50.0kg and kid 2 is 40.0kg. how far from the pivot on the right side should kid 1 sit to balance the seesaw
A 4.2cm tall object is placed 27cm in front of a spherical mirror. It is desired to produce a virtual image that is upright and 3.0cm tall. What is the radius of curvature of the mirror
A spider hangs from a strand of silk whose radius is 3.60 10-6 m. The density of the silk is 1300kg/m3. Determine the mass (in kg) of the spider
A 230 000 V-rms powerline carries an average power PAV = 250 MW a distance of 200 km. If the total resistance of the cables is 10 ohms, what is the resistive power loss
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