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A spring has a force constant of 100 N/m and an unstretched length of .07 m. One end is attached to a post that is free to rotate in the center of a smooth table. The other end is attached to a 1 kg disc moving in uniform circular motion on the table, which stretches the spring by .03 m. Friction is negligible. What is the centripetal force on the disc?
A uniform magnetic field passes through a horizontal circular wire loop at an angle 17.3° from the normal to plane of the loop. determine the magnetic flux through the loop
Two wires are tied to the 500 sphere. The sphere revolves in a horiIzontal circle at a constant speed of 6.8.
You have a pure (24-karat) gold ring with mass 17.0 g, how many protons are in the ring and what is their total positve charge
A 56kg skier starts from rest at the top of a 1200-m long trail which drops a total of 230.00 m from top to bottom. At the bottom, skier is moving 11m/s. How much energy was dissipated by friction?
In a series R-L-C circuit, L = 0.205H , C = 80.5?F and the voltage amplitude of the source is 260V, What is the resonance angular frequency of the circuit
A string of a violin is 32 cm long between fixed points with a fundamental frequency of 440 Hz and a mass per unit length of 7.2 x 10-4 kg/m. What are the wave speed and the tension in the string
How long does it take the crate to hit the ground. suppose that the plane continues to fly with the same velocity.
A light plane is headed due south with a velocity of 157 km/h relative to still air. After 1.00 hour, the pilot notices that they have covered only 121 km and their direction is not south but southeast (45.0^circ).
The distance between a loudspeaker and the left ear of a listener is 1.60 m. compute the time required for sound to travel this distance if the air temperature is 20° C.
It exhausts the propellant in a 20-s “burn.” If the rocket, initially at rest, moves at 150 m/s after the burn, illustrate what impulse is experienced by the rocket sled?
An incompressible fluid flows steadily through a pipe that has a change in diameter. The fluid speed at a location where the pipe diameter is 8 cm is 1.28 m/s. What is the fluid speed at a location where the diameter has narrowed to 4.00 cm.
What is the speed of the electron when it strikes the target? How far does it fall under the influence of gravity during its flight?
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