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Find the drift velocity of conduction electrons in a gold wire of diameter 2.88 mm when a current of 0.123 A flows in it. The density of conduction electrons in gold is 5.90 × 1028 m-3.
Nichrome wire of cross-sectional radius 0.788 mm is to be used in winding a heating coil. find the length of wire you must use to wind the coil
Two isotopes of a certain element have binding energies that differ by 4.7540 MeV. The isotope with the larger binding energy contains one more neutron than the other isotope. Find the difference in atomic mass between the two isotopes
A coil of wire has a resistance of 38.0 ? at 25° C and 43.7 ? at 51° C. What is the temperature coefficient of resistivity
A 8.0 x15 swimming pool slopes linearly from a 1 depth at one end to a 3.70 depth at the other. What is the mass of water in the pool.
A copper telephone wire has essentially no sag between poles 34.00 m apart on a winter day when the temperature is -20°C. How much longer is the wire on a summer day.
Your roommate is working on his bicycle and has the bike upside down. He spins the 54.0cm -diameter wheel, What is the pebbles speed and acceleration
An elevator can lift a 113 N aircraft a distance of 28 meters in 10 s. what is the power output of the elevator
A solar cell generates a potential difference of 0.094 V when a 560 ? resistor is connected across it, and a potential difference of 0.14 V when a 1100 ? resistor is substituted. What are the emf of the solar cell
One of Einstein's postulates says that nothing travels faster than the speed of light in a vacuum, c, what limit does this place on the numerical value for n
The first puck is deflected 38 below the +x axis and moves off at 0.37 m/s. Find out the speed and direction of the second puck after the collision.
An airline passenger dangles her watch from a string while the jet takes off. The string makes an angle of 25o with respect to the vertical while the aircraft accelerates for takeoff, which takes about 18 seconds. Determine the takeoff speed of the a..
When an 82.0-kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2 x 10^3 J. By how much does the potential energy of a 17 kg child increase when the child climbs a normal sta..
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