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You need to prepare a 0.151-mm-diameter tungsten wire with a resistance of 2.83 k? How long must the wire be? The resistivity of tungsten is 5.62 × 10-8 m. Please show how you derived the answer.
Two wires are identical, except that one is gold (resistivity = 2.44×10-8 ?·m) and the other is NiChrome (resistivity = 1.10×10-6 ?·m). What is the resistance of the NiChrome wire
A dentist uses a mirror to examine a tooth that is 0.75 cm in front of the mirror. The image of the tooth is formed 11.0 cm behind the mirror. Determine the mirror's radius of curvature
A meter stick moving in a direction parallel to its length appears to be only 40cm long to an observer. what is the meter stick's speed relative to the observer
The nucleus of an atom is on the order of 10-15 m in diameter. For an electron to be confined to a nucleus, What would be the kinetic energy of an electron confined to this region
A copper bar of thermal conductivity 401 W/(m · K) has one end at 108° C and the other end at 18° C. What is the rate of heat conduction along the bar
A popcorn kernal initially at rest, explodes into two peices, one haveing twice the mass of the other. What is the ration of velocities of the frgament
An inductor with an inductance of 2.10 H and a resistance of 7.90 Omega is connected to the terminals of a battery with an emf of 6.00 V and negligible internal resistance. Find the initial rate of increase of current in the circuit
A 7.9cm diameter horizontal pipe gradually narrows to 5.3cm . When water flows through this pipe at a certain rate, compute the volume rate of flow
calculate the uncertainty in momentum and velocity of an electron in a 1 aring box 1 dimenstional a hydrogen atom in a
find the net force magnitude and direction acting on a 0.5c charge due to a 3c charge 1.2 meters away at an angle of 30
sketch a scaled ray diagram and show the location of the iamge using 3 principle rays, calculate the magnification of the object
In 1994, Mata Jagdamba of India had very long hair. It was 4.23 m long. Suppose Mata conducted experiments with her hair. how large was the mass
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