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A 9.00-V battery delivers a current of 1.35 A to the lightbulb filament of a pocket flashlight.
(a) How much charge passes through the filament in 1.80 min?
(b) How many electrons pass through the filament?
(c) Calculate the energy delivered to the filament during that time.
(d) Calculate the power delivered by the battery.
a 100W light bulb connected to a 12.0 V source experiences a voltage surge that produces 14.0V for a moment. By what percentage does its power output increase
An airplane is flying through a thundercloud at a height of 2400 m. (Flying at this height is very dangerous because of updrafts, turbulence, and the possibility of electric discharge.)
An infinitely long wire is formed as in the diagram on your assignment. It is formed so that it has a circular portion of R = 50cm and the straight portion is located at a distance r from the center of the circular portion. Determine r (in cm) suc..
Consider an object on an incline where friction is present. The angle between the incline and the horizontal is ?, Find an expression for the acceleration of this object. Treat down the incline as the positive direction
a portable cd player uses a current of 7.50 mA and has a resistance of 465, If the player uses 24-gauge wire (A= 0.20 mm2) with a length of 6.50 cm, what is the resistivity of the wire
How many electrons would have to be added to one of these spheres to make it electrically neutral?
A prospector finds a solid rock composed of granite (? = 2650 kg/m3) and gold. The volume of the rock is 3.40 10-4 m3 and its mass is 3.87 kg. What percentage of the rock is gold by mass
A 131 kg sign hangs between two buildings by two cables. Cable 1 is attached at a 36 degree angle wrt to the horizontal, and Cable 2 is attached at a 24 degree angle wrt to the horizontal. What is the tension in cable 1.
The rotor in a certain electric motor is a flat, rectangular coil with 88 turns of wire and dimensions 2.33 cm by 4.20 cm, What is the average power of the motor
You swing a 2.60 kg stone in a circle, using the full length of a thin 60.0 cm rope. At what speed must you swing it so its acceleration will be 9.8 m/s^2.
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 46.0cm, What is the magnitude of the gravitational acceleration on this planet
What is the magnitude of the force of upper leg on the lower leg at the knee joint.
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