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A cable is connected at point A (1,2,3) and pulls towards point B (7,7,-1) the force in the cable is 100 pounds.A) express the force in the cable as a vectorB)calculate the moment of the force about the origin and express it as a vectorC) calculate the moment about the x-axisD)calculate the magnitude of the moment produced by the force about a line(axis) through (0,4,0) and (4,0,-4)
An 80.0-m-long brass rod is struck at one end. A person at the other end hears two sounds as a result of two longitudinal waves, What is the time interval between the two sounds
Think of the relationship between Kirchoff's Junction Rule and conservation of charge, Why cant charge build up at a junction of wires
a 8.4 kg mass is attached to a light cord that passes over a massless frictionless pulley. the other end of the cord is
The total mass of the astronaut with her space suit and all her gear is 125 kg. A small leak develops in her propulsion system and 5.99 g of gas are ejected each second into space with a speed of 781 m/s.
er beam with wavelength ? = 6328 Å is incident normal to the plane of a diffraction grating. find the distance between the two first-order maxima in the pattern
Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except for light of single wavelength. It then falls on two slits separated by 0.410 . In resulting interference pattern on a screen 2.10 away, adjacent bri..
A particle of mass 7.22 x 10^-27 kg, moving at 7.06 x 10^5 m/s, strike an identical particle which is initially at rest. What are the final speeds of the particles
Earth is farthest from the Sun in July and closest to Sun in January. During which Northern Hemisphere season is Earth moving fastest in its orbit.
An electron follows a circular orbit around the nucleus of a hydrogen atom at a radius of 5 *10^11m and with aperiod of 1.4 *10^-16s. What is the magnitude of the orbital magnetic dipole moment of the hydrogen atom
A proton accelerates from rest in a uniform electric field of 670 N/C. At some later time, its speed is 1.38 106 m/s. How far has it moved in that interval
Three dogs are pulling on a blanket in different directions. The English shepherd is pulling north with a force of 40 N. in what direction is the boxer pulling
a standing wave oscillating on a string at frequency f_0. How many antinodes will there be if the frequency is increased to 3f_0
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