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A cylindrical aluminum pipe of length 1.57 m has an inner radius of 2.20 x 10-3 m and an outer radius of 2.80 x 10-3 m. The interior of the pipe is completely filled with copper. What is the resistance of this unit? (Hint: Imagine that the pipe is connected between the terminals of a battery and decide whether the aluminum and copper parts of the pipe are in series or in parallel.)
for spontaneous decay of a parent nucleus into daughter nuclei the parent nucleus must have a mass than the sum total
An ac series circuit has an impedance of 196 ? , and the phase angle between the current and the voltage of the generator is ? = -72°. The circuit contains a resistor and either a capacitor or an inductor
an electromagnetic wave strikes a 2.60 cm2 section of wall perpendicularly. the rms value of the waves magnetic field
For the circuit shown below, C = 0.113 µF and = 103 V. The switch throw is rotated to contact b after having been at contact for the long time, and 3.47s later the potential difference across the capacitor is equal to 1/2. What is the value of R.
A 160 kg horizontal beam is supported at each end. A 300 kg piano rests a quarter of the way from one end. What is the vertical force on each of the supports
At very fast car races the sound of the engine as a car approaches is much different than when it passes you. How fast would the car need to be going to have the change in frequency be one octave
A 507g mass oscillates with an amplitude of 13.0 cm on a spring whose spring constant is 23.0 N/m. Determine the total energy
A 2 kg object is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of 20.0 N is needed to hold the object at rest when it is pulled 0.200 m from its equilibrium position.
a 2.50muc charge is located at a point a at the origin and a -6.00 muc charge is located at point b at 20.0cm on the
An airplane is flying with a velocity of 90 m/s at an angle of 25 above the horizontal. When the plane is a distance 126 straight above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.
The brakes of a truck cause it to slow down by applying a retarding force of 7350 N to the truck over a distance of 1090 m. What is the work done by this force on the truck
Two cars collide head on while each is traveling at 90. What is the temperature increase of each car
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