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A wire made of tungsten is 783 m long and has a cross-sectional area of 27.3 multiplied by 10-7m2. It is observed that 349.9 Cpass through the wire in 70.7 s. Theresistivity of tungsten is 5.6 multiplied by 10-8 Ω · m. Determine the power loss of the wire.
A farm tractor tows a 3550-kg trailer up a 18?incline with a steady speed of 3.0 m/s. What force does the tractor exert on the trailer
A train moves at speed v. Bullets are successively fired at speed u (relative to the train) from the back of the train to the front, What is the maximum number of bullets that are in flight at a given instant, in the ground frame
A railroad car of mass 2.46 multiply.gif 104 kg, is moving with a speed of 4.13 m/s. What is the speed of the four cars after the collision
A 5.57-g bullet is moving horizontally with a velocity of +344 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resis..
compute the force of the Earth's gravity on an electron and evaluate it with the force exerted on the electron by an electric field of magnitude 12500-V/m (a relatively small field). The mass and charge of an electron are given on the inside back ..
A race car has a mass of 701 kg. It starts from rest and travels 35.0 m in 3.0 s. The car is uniformly accelerated during the entire time. Illustrate what net force is exerted on it?
questiona car travels all along a straight line at a constant speed of 48.5 mih for a distance d and then another
Monochromatic light with wavelength 580nm passes through a single slit 2.40 um wide and 1.70m from a screen.
A glass light pipe in air will totally internally reflect a light ray if its angle of incidence is at least 39. What is the minimum angle for total internal reflection if the pipe is in water
A 1.80kg block slides on a rough horizontal surface. The block hits a spring with a speed of 2.50m/s, what is the force constant of the spring?
In starting an exercise, a 1.61 m tall personlifts a 2.18 kg book on the ground so it is 2.26m above the ground. What is the work done bythe person's head
A professor's office door is 0.94 wide, 2.2 high, 4.0 thick; has the mass of 23, and pivots on frictionless hinges. A "door closer" is attached to door and top of the door frame. When the door is open and at rest, the door closer exerts a torque of 5..
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