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A copper wire of radius 3.0 mm carries a constant current of 4 A. Discover the average drift velocity of the electrons if the density of copper is 9000 kg/m3, assuming one conduction electron per copper atom, and recalling that one copper atom has a mass of 64 atomic mass units.
At a certain point in time, the total energy of a closed system is observed to be 90 J. Which one of the following statements is TRUE?
Two moles of an ideal diatomic gas have an initial pressure of 4:00 atm and initial volume of 16:0 L. What are the initial and final temperatures of the gas
A car is traveling around a horizontal circular track with radius r = 240 m at a constant speed v = 17 m/s, What is the y component of the car's acceleration when it is at point B
a bus contains a 1740 kg wheel (a disk that has a .56 m radius) and has a total mass of 9600 kg. How high can the bus climb with this stored energy and still have a speed of 3.10 m/s at the top of the hill
A person walks into a room and switches on the ceiling fan. The fan accelerates with constant angular acceleration for 15 s until it reaches its operating angular speed of 1.0 rotations/s after that its speed remains constant as long as the switch..
A beam of red light, whose frequency is 4.30*10^14, passes through a piece of dense flint glass (n=2.13) in 25 ps (picoseconds). Find the thickness of the glass
A long, current-carrying solenoid with an air core has 1670 turns per meter of length and a radius of 0.0194 m. What is the mutual inductance of this system?
An open organ pipe and an organ pipe that is closed at one end both have langths of .52 m at 20 degrees celsius. What is the fundamental frequency of each pipe in hertz
Assuming the motor is supplied through an equivalent 208 V source with an impedance of 0.18+j0.15W, determine the voltage at the motor terminals during normal operation (slip of 3%).
Calculate the electric force between these two electrons. The value of the Coulomb constant 9 × 109 N · m2/C2 and the elemental charge is 1.6 × 10?19 C
Two cylindrical rods are identical, except that one has a thermal conductivity k1 and the other has a thermal conductivity k2. As the drawing shows.
An LCR circuit consists of a 100 ohm resistor, a 10F capacitor, and a 5 mH inductor, and is driven by an acemf source whose frequency can be varied.
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