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The voltage in typical household wiring is 120 Volt. A 100 Watt light bulb therefore draws a current of 0.83 Amp when connected. If the filament of the light bulb has a diameter of 0.065 millimeter,
obtain what is the current density in the filament?
___________ A/m2 (in the direction of the current)
Find the ratio of this current density to that in a 12-guagewire (diameter 0.21 centimeter) supplying current to the light bulb?
___________(Jfilament /Jwire)
An 18.0g arrow is fired into a 3.00kg pumpkin suspended on a string. Calculate the velocity of the arrow just before it enters the pumpkin
If you run the wire between the poles of a strong horseshoe magnet, subjecting 5.00 cm of it to a 1.95 T field (perpendicular to the wire), what force is exerted on this segment of wire
A lost shipping container is found resting on the ocean floor and completely submerged. The container is 6.2 m long, 2.5 m wide, and 2.8 m high, What is the mass of the container
A charged particle is moving horizontally westward with a velocity of 3.5 x 10^6 m/s in a region, What is the charge on the particle
An object is placed 12 cm in front of a concave mirror whose focallength is 23 cm. The object is 3.6 cm tall.Determine (a) the location of the image,taking a real image as a positive value and a virtual image as anegative value.
a proton accelerates from rest in a uniform electric field of 624 nc. at some later time its speed is 1.04 x 106 ms.a
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It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.175 s, elucidate what is the average force exerted on the ball by the wall?
A basketball of mass 610g and circumference 76cm is rolling without slipping on a gym floor. Treating ball as a hollow sphere, what fraction of its total kinetic energy is associated with its rotational motion.
If it has a mass of 14.0 g, what is the minimum current (in Amperes) through the wire that would cause a magnetic force equal to its weight
A small girl and boy take a sled up to the top of a snow covered slope which is inclined 30 degrees above the horizontal, How fast are they going at the bottom
There are four charges, each with a magnitude of 2.0 µC. Two are positive and two arenegative. The charges are fixed to the corners of a 0.33 m square, one to a corner, in such a way that the net force on any charge is directed toward the center o..
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