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A silver wire of diameter 2.0 mm carries a current of 159 mA. The density of conduction electrons in silver is 5.8 1028 m3. How long (on average) does it take for a conduction electron to move 1.0 cm along the wire?
The water in a tank is at a gauge pressure of 259,145 Pa. If the bottom of the tank that has an area of 0.5 m2
A traveling sinusoidal electromagnetic wave in vacuum has an electric field amplitude of 57.1 V/m. Find the intensity of this wave and calculate the energy flowing during 16.9 s through an area of 0.0217 m2
A turntable must spin at 33.4 rpm (3.50 rad/s) to play an old-fashioned vinyl record. How much torque must the motor deliver if the turntable is to reach its final angular speed in 2.5 revolutions
n = 4.13 mol of Hydrogen gas is initially at T = 335 K temperature and pi = 1.73×105 Pa pressure. How much entropy did the gas emit
The focal length of diverging lens is negative. if f=-20cm for a particular diverging lens, where well the image be formed of an object locate 50cm to the left of the lens on the optical axis? What is the magnification of the image?
An alien pilot of an intergalactic spaceship, on a mission to measure the sizes of galaxies, is traveling at 0.86c relative to the galaxy A. She determines the length of the short axis of the galaxy A to be 2.9 × 1017 km.
In the future, an astronaut weighing 882 Newtons on earth may stand on a new moon and weigh themselves to find they now weigh 441 Newtons. what is the mass of this new moon
Given a capacitor whose plates measure 15cm by 3.7 cm and are separated by a 2.2mm air gap. Calculate he maximum amount of energy which can be stored in the capacitor under these conditions
Explain some of the many advantages that Fiber Optic Cable has over other media (e.g. conductive wires) in the transport of information.
Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occuring electrons is removed. obtain the magnitude of the electron's centripetal acceleration
A light spring with spring constant 1200 N/m hangs from an elevated support. From its lower end hangs a second light spring, which has spring constant 1650 N/m. An object of mass 1.50 kg is hung at rest from the lower end of the second spring.
On your way to class you are walking North up the oval. From Dale Hall you walk 180 m towards Nielsen Hall when you meet a friend heading the other direction.
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