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A train moving with a constant speed of 75 km/hr moves east for 45 minutes then in a direction 20o east of north for 60 minutes. Find the magnitude of the average velocity of the train during this run?
A proton moves perpendicular to a uniform magnetic field. Its trajectory is a circle of radius 0.31 m with a period of 2.1 10-7 s. find the magnitude of centripetal force exerted on the proton
An electromagnetic wave produced by a dipole antenna is traveling in free space and has an rms electric field amplitude of 17 N/C. find the rms amplitude of the magnetic field
A 50g hard-boiled egg oscillates on a spring with force constant 25N/m. A damping force F=-bv acts on the egg. Calculate the magnitude of the damping constant b
An object placed 14.9 cm from a concave mirror produces a real image 12.3 cm from the mirror. where is the new image located as measured from the mirror
A dart is thrown horizontally with an initial speed of 6 m/s toward point P, the bull's-eye on a dart board. How far away from the dart board is the dart released in meters
A rod of length l and uniform mass m is hinged at its lower end while it was held at rest in a vertical position. What is the angular acceleration of the rod during the fall for a given theta
You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, where the acceleration due to gravity is 3.71 meters per second per second.
a 2.05 kg frictionless block is attached to an ideal spring with force constant 325 nm. initially the spring is neither
An inexperienced hunter shoots at a squirrel sitting in a tree. The squirrel is sitting on a branch that is 22 m above the gun barrel, Write the initial velocity of the bullet in vector form
A snow maker at a resort pumps 150 kg of lake water per minute and sprays it into the air above a ski run. The water droplets freeze in the air and fall to the ground, forming a layer of snow.
An AC generator supplies an rms voltage of 230 V at 50.0 Hz. It is connected in series with a 0.650 H inductor, a 6.00 ?F capacitor, What is the peak voltage across the inductor
In a cargo plane, the center of gravity must be between the front and rear landing gears in order to maintain a torque equilibrium. Determine the normal force exerted by the ground on the front wheel
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