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Q1. A 3.10-m-long, 310 kg steel beam extends horizontally from the point where it has been bolted to framework of a new building under construction. A 73.0 kg construction worker stands at the far end of the beam.What is the magnitude of the torque about the point where the beam is bolted into place?
Q2. In the steady state, the current moves straight along the bar, so the net sideways force on a moving charge must be zero. Utilize this fact to establish the drift speed of the mobile charges.
a thin rod, of length L = 1.9m and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball is attached to the other end. find the initial height of the ball
A 9.0 cm diameter wire coil is at first oriented so that its plane is perpendicular to a magnetic field of 0.67 T pointing up. During the course of 0.30 s, the field is changed to one of 0.25 T pointing down. What is the average induced emf in coil.
The mass of Mercury is 0.0550 times that of earth, and its radius is 0.380 times that of earth, Calculate the average density of Mercury (in kg/m3) given the earth's density is 5.52×103 kg/m3
A 15.0 m uniform ladder weighing 500 N rests against a frictionless wall. The ladder makes a 60.0 angle with the horizontal. Find out the horizontal and vertical forces the ground exerts on the base of the ladder when an 800 N fire-fighter is 4.00m f..
A man does 4,335 J of work in the process of pushing his 2.80 103 kg truck from rest to a speed of v, over a distance of 27.5 m. determine the horizontal force exerted on the truck
In one frame of reference(say H), two events occur at the same point in space, but are separated by a time interval of 100 nanoseconds
A laser beam in air is incident on a liquid at an angle of 38.0 with respect to the normal. What is the critical angle for total internal reflection for this fluid
Each time you remove a bulb you will calculate the new total resistance and the new current.
questiona 664-turn circular-loop coil 11.2 cm in diameter is initially aligned so that its axis isnbspparallel to
question1an object floats with half its volume beneath the surface of the water. the weight of the displaced water is
Two identical, small insulating balls are suspended by separate 0.31m threads that are attached to a commone point on the ceiling. estimate the Charge on each ball
Fraternal twins Jack and Jill are sent in two different ships to fetch water from the planet Kusbane that is 20 lightyears away. what is the age difference between Jack and Jill when Jack's ship arrives at Kusbane
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