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Question: A typical flashlight battery will produce a 0.50-A current for about 3 h before losing its charge. Determine the total number of electrons that have moved past a cross section of wire connecting the battery and lightbulb. Express your answer using two significant figures.
wires a and b are made of the same material. wire a has resistance r. wire b has half the length and double the radius of wire a. what is the resistance of wire b?
We capture 3.40 liters of gas in a sealed container at one atmosphere and 22 °C. Determine how many moles are in the container
A solenoid with a radius of 8.0 x 10-3 meter and 210 turn/cm is used as an inductor in a circuit. Evaluate what is the length of the solenoid
a spacecraft moves past a student with a relative velocity of .90 c. how much time has elapsed according to the student's watch
to ensure a tight fit cylindrical metal elements are sometimes made the same size or even slightly larger than the
A Carnot heat engine takes 89 cycles to lift a 15 kg mass a height of 15 m. What is the temperature of the hot reservoir in Celsius
Two identical containers are open at the top and are connected atthe bottom via a tube of negligible volume and a valve that isclosed. Determine the fluid level in the left container when equilibrium is re established
a disk of radius 0.2meters and mass 0.25kg is free to rotate without friction about an axis through its center and
The starter motor of a car engine draws a current of 170 A from the battery. The copper wire to the motor is 5.80 mm in diameter and 1.2 m long.
A horizontal rectangular surface has dimensions 2.90cm by 3.40cm and is in a uniform magnetic field that is directed at an angle of 26.5 degrees above the horizontal. What must the magnitude of the magnetic field be in order to produce a flux of 4.00..
On a seesaw, a 28-kg child sits 2.8 m from the pivot point. Where should a 38-kg child sit to put the center of mass at the pivot
Two groups of canoeists meet in the middle of a lake. After a brief visit, a person in canoe 1 pushes on canoe 2 to separate the canoes. what is the mass of canoe 2
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