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1) The electric potential energy stored in the capacitor of a defibrillator is 83 J, and the capacitance is 124 µF. What is the potential difference that exists across the capacitor plates?
2) A resistor is connected across the terminals of a 3.00-V battery, which delivers 2.40 105 J of energy to the resistor in 17 hours. What is the resistance of the resistor?
3) A cylindrical copper cable carries a current of 1190 A. There is a potential difference of 1.60 10-2 V between two points on the cable that are 0.25 m apart. What is the radius of the cable?
Consider a gas of neutrons in a nuclear reactor. The neutron density is 10^8 neutrons/cm^3 in an operating reactor which has a core temperature of 535K. Are the neutrons in the reactor core a classical gas or a quantum mechanical gas and how can y..
the starter motor of a car engine draws a current of 170a from the battery. the copper wire to the motor is 4.0mm in
A machine part rotates at an angular speed of 0.60 rad/s; itsspeed is then increased to 2.2 rad/s at an angular acceletation of0.70 rad/s2
The coefficient of kinetic friction between a refrigerator (mass 100kg) and the floor is 0.20, and the coefficient of static friction is 0.25. If you apply the minimum force needed to get the refrigerator to move, what will the acceleration be?
Suppose that the current is used up as it moves through a resistor. The potential difference across the resistor is kept the same and V/I = R. how can the resistance of the resistor be constant
Ten days after it was launched toward Mars in December 1998, find the potential energy of the earth-spacecraft system
Suppose the shuttle increases its speed so that it has a length of 36.1 m when viewed by a stationary observer. How long would it take to complete one orbit
Besides the gravitational force, a 3.40-kg object is subjected to one other constant force. The object starts from rest and in 1.20 s experiences a displacement of (5.50 - 3.30) m, where the direction of is the upward vertical direction. find the ..
At the time of this book's printing, the U.S. national debt is about $10 trillion. If payments were made at the rate of $2 000 per second, how many years would it take to pay off the debt, assuming no interest were charged
An 80.7-kg jogger is heading due east at a speed of 1.950 m/s. A 53.60 kg jogger is heading 33.1° north of east at a speed of 2.89m/s. compute the magnitude (enter first) and direction of the sum of momenta of the two joggers.
a quarterback throws a pass at an angle of 40 degrees above the horizontal with an initial speed of 22.0 m/s. determine the max height of the ball
A very long, straight solenoid with a cross-sectional area of 6.15cm squared is wound with 50 turns of wire per centimeter, calculate the average induced emf in the secondary coil
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