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A turntable that spins at a constant 73.0{\rm rpm} takes 3.00{\rm s} to reach this angular speed after it is turned on. Find its angular acceleration (in {\rm rad/s^{2}}), assuming it to be constant, and the number of degrees it turns through while speeding up.
The great, grey-green, greasy Zambezi River flows over Victoria Falls in south central Africa. find the velocity of the water when it hits the bottom
A point charge with a charge q1 = 2.60?C is held stationary at the origin. How much work is done by the electric force on q2
A charge -Q is uniformly distributed along a circular arc of radius R beginning on the +y axis and ending on the -x axis. Find the electric potential at the origin
You clamp a straight ramp of length 51 cm making an angle of 18.0° with the horizontal table top, What time elapses from when the car leaves the ramp until it reaches the floor
A spring with a constant 150 N/m is attached to a block with a mass 1.5 kg. What is the maximum displacement the mass will achieve
An object is fired at 30.0 m/s at an angle of 35.0 degrees from a vertical cliff that is h meters (where h is unknown quantity) above the sea. calculate the velocity vector of the object
A professor's office door is 0.80 wide, 3.0 high, and 5.0 thick; has the mass of 25; and pivots on frictionless hinges. A "door closer" is attached to the door and the top of door frame.
A ball is dropped from a high building. Using the approximate value of g = 10 m/s2, find the change in velocity between the fourth and fifth second of its flight
Two electrons are located at two of the vertices of an equilateral triangle, one at each vertex. What is the net electric field at the third vertex
A constant force of 50 N is applied tangentially to the rim of a solid disc with a 60 cm radius. The wheel has a moment of inertia of 40 kgm^2. What is the mass of the disc
A certain pipe has resonant frequencies of 240 Hz, 400 Hz, and 560 Hz, with no other resonant frequencies between these values. What is the fundamental frequency of this pipe
A solenoid of length 4.5 cm and diameter 0.85 cm is wound with 181 turns per cm. The current is decreasing at a rate of 36.6 A/s. What is the induced emf in one of the windings
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