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A piece of Nichrome wire passes a current of 0.933 A when a potential of 1.64 Volts is applied. What is the resistance of the wire?
(ohms)
A crate with mass 35.5 initially at rest on a warehouse floor is acted on by a net horizontal force of 120. What acceleration is produced.
You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip. Explain how much force must you exert to keep the pole motionless in a horizontal position?
A bullet of mass 0.018kg traveling horizontally at a high speed of 290m/s embeds itself in a block of mass 4 kg that is sitting at rest on a nearly frictionless surface.
A roller coaster car traveling at a constant speed of 20.0 m/s on a level track comes to a straight incline with a constant slope, How far has the car traveled up the incline at this time
using a large shiny curved surface (mirror). you notice that an object is upright and exactly 2/3 of the height of the object when it is 150m away from the mirror. what is the image distance
A source of 116m In (half-life = 54.0 min.) is counted using a G-M tube. Successive 1-min observations gave 131,340 counts, calculate the true interaction rate in the G-M tube at 12:00
Two rigid rods are oriented parallel to each other and to the ground. The rods carry the same current in the same direction. The length of each rod is 0.90m, and the mass of each is 0.078 kg. One rod is held in place above the ground, while other flo..
A 70.0 kg circus performer slides 4.90m down a pole to the circus floor, starting from rest. What is the kinetic energy of the performer as she reaches the floor if the frictional force on her from the pole (a) is negligible (she will be hurt) and (b..
A 23 bullet traveling 245 penetrates a 3.0 block of wood and emerges cleanly at 195 .If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges.
Two workers are trying to move a heavy crate. One pushes on the crate with a force , which has a magnitude of 444 newtons (N) and is directed due west.
A group of explorers in Antarctica can obtain water only by melting ice. They wish to make 4 cups of coffee, determine the amount of heat required and the amount of power required
Transverse waves travel with a speed of 18 m/s in a string under tension of 5 N. What tension is required for a wave speed of 27 m/s in the same string.
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