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A rod of mass m and radius R rests on two parallel rails that are a distance d apart have a length L. The rod carries a current I in the direction shown and rolls along the rails without slipping. A uniform magnetic field B is directed perpendicular to the rod and the rails. If it starts from rest, what is the speed of the rod as it leaves the rails? (Use any variable or symbol stated above as necessary.)
v = .......... m/s
Analyse average density of the white dwarf
find the radius of curvature of the vertical profile of the road at A. Using value of the curvature found, determine the force exerted on a 160-lb driver by the seat of his 3100-lb car as the car, traveling at a constant speed of 50 mi/h, passes t..
A flight attendant pulls her 75 N flight bag a distance of 305 m along a level airport floor at a constant velocity. Find the work done by the force of friction on the flight bag
A quarter-pound hamburger with all the fixings has a mass 210g . The food energy of the hamburger is 2.4MJ. What is the energy equivalent of the mass of the hamburger
As a baseball is being caught, its speed goes from 31 to 0 m/s in 0.005 seconds. The mass of the baseball is 0.145 kg. What is the force acting on the ball
A rifle is aimed horizontally at a target 1,234.37 m away. What is the bullet's time of flight
Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 30.8 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is at a pressure of 101.3 kPa
What is the range of wavelengths for FM radio (88 MHz to 108 MHz), What is the range of wavelengths for AM radio
A 40 percent efficient electric power plant produces 900MW of electric power and discharges waste heat into 30 C ocean water. Suppose the waste heat could be used to heat homes during the winter instead of being discharged into the ocean. A typical A..
A satellite is in a low circular orbit about the Earth (such as it just skims the surface of the Earth). How long does it take to make one revolution around Earth.
In a physics lab experiment, a student immersed 206 one-cent coins (each having a mass of 3.00g ) in boiling water. What was the final temperature of the coins
A potter's wheel having a radius 0.49 m and a moment of inertia of 12.6 kg · m2 is rotating freely at 48 rev/min. Find the effective coefficient of kinetic friction between the wheel and the wet rag
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