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A 120.0-\Omega resistor, a 60.0-\Omega resistor, and a 40.0-\Omega resistor are connected in parallel and placed across a 12.0-V battery.
1. What is the equivalent resistance of the parallel circuit?
2. What is the current during the entire circuit?
3. What is the current during each branch of the circuit?
A sports car accelerates from a standing start to 65 mi/h in 4.61 seconds. What is the car's acceleration in ft/s2? How far can the car travel in that time
A resistance thermometer using a platinum wire is used to measure the temperature of a liquid. The resistance of is 2.42ohms at 0 degrees, calculate the temperature of the liquid
The loaded cab of an elevator has a mass of 3.0 x10^3 kg and moves 236 m up the shaft in 23s at constant speed. At what average speed does the force from the cable do work on the cab?
q1. in a science fiction story a microscopic black hole is given an enormous positive charge by firing an
To strengthen his arm and chest muscles, an 75.0 kg athlete 2.00 m tall is doing a series of push-ups as shown in the figure below . His center of mass is 1.20 m from the bottom of his feet, and the centers of his palms are 30.0 cm from the top of..
While standing atop a building 50.7 m tall, you spot a friend standing on a street corner. Using a protractor and a dangling plumb bob, How far away from the foot of the building is your friend
A uniform spherical shell of mass M = 13.0 kg and radius R = 0.390 m can rotate about a vertical axis on frictionless bearings (see the figure). A massless cord passes around the equator of the shell, over a pulley of rotational inertia I = 0.200 ..
A tube 1.16 m long is closed at one end. A stretched wire is placed near the open end. The wire is 0.355 m long and has a mass of 8.80 g. Find the tension in the wire
a 10 kg sled slides down a snowy hill. At position A it is moving at 1.00 m/s when it reaches position B it is moving at 3 m/s. What is the work done by friction on the sled
a slide projector needs to create a 96.0cm high image of a 1.80cm tall slide. the screen is 306 cm from the slide.a
A playground merry-go-round of a diameter 4m and mass of 200kgis pushed by children to an angular speed of 3 rad/s. If two children of a mass of 15 kg each jump on the edge of the merry go round. Discover the new angular speed.
A 350 kg piano slides 3.90 m down a 23 degree incline slope, and is kept from accelerating by a man who is pushing back on it parallel to incline. What is the force completed by the man.
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