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A car moves in a flat, circular path of radius R on a surface with a coefficient of kinetic friction of 0.25 and a coefficient of static friction of 0.35.
(a) Draw a free-body diagram for all forces acting on the car. Include views from the top and the side. Show the direction of the net force on the car.
(b) If the maximum speed the car can have without sliding is 15 m/s, determine the radius of the circular path.
(c) How long does it take the car to complete one orbit?
A proton moves in a circular path perpendicular to a 1.19 T magnetic field. Calculate the energy of the proton in eV
Burning a pound of coal produces about 13,000 Btu of energy. How many megajoules of energy are produced by burning 4 pounds of coal?
The rain-soaked shoes of a person may explode if ground current from nearby lightning vaporizes the water. what average current is required to vaporize the water
Two circular hoops, with masses and radii in the ratios m2/m1=4 and R2/R1=4, rotate with angular speeds in the ratio ?2/?1=2. What is the ratio of the kinetic energies K2/K1
An object is placed 8cm in front of a converging lens with a focal length of 18cm. What is the lateral magnification
A solid wire 2.1mm in diameter carries a 10.0 A current with uniform curent density. Use Ampere's Law to determine the magnetic field strength
In the Millikan oil-drop experiment, an atomizer (a sprayer with a fine nozzle) is used to introduce many tiny droplets of oil between two oppositely charged parallel metal plates.
Establish the Force required to raise a 25.50 kg object by 2 pulleys, the diameter of larger circular pulley is 12.0 cm and the smaller pulley is 8.5 cm.
A plastic bar that is 20 cm long passes a total charge of 5.0 nC distributed evenly along its length, Find the x component of the electric field at point (0.0m,0.10m)
If a second plane with the same charge density is placed parallel and a distance d above the first one, what is the electric field between the two planes
In a common but dangerous prank, a chair is pulled away as a person is moving downward to sit on it, causing the victim to land hard on the floor.
A heat engine in each cycle extracts 50,000 Btu of thermal energy and rejects (or releases) 20,000 BtU of thermal energy. How many Btu of work is done each cycle
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