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1. The cyclist speeds up to a cadence of 120 (120 rotations per minute) in a surge lasting 30 seconds. What is the magnitude of angular acceleration of the wheel during the surge? (Use your result from #1; assume angular acceleration is constant.)
A centrifuge whose maximum rotation rate is 11,000 rev/min can be brought to rest in 3.00 s. What is the average angular acceleration of the centrifuge
A 0.33-m-long violin string has a mass of 0.89 g. The peg exerts a 45 N force on it. Determine the lowest frequency sound produced by the vibrating sting
A simple harmonic oscillator has a restoring force of 360 N/m and a mass of .59kg. What will be its maximum displacement from equilibrium
An elevator has a downward acceleration of 1 m/s2. A person, having a weight of 800 N as measured by a scale at rest on the ground, steps on a scale in the elevator. What does the scale read? A) 0 N. B) Approximately 80 N. C) Between 80 N and 800 ..
A spy satellite is in circular orbit around Earth. It makes one revolution in 6.02 hours. How high above Earth's surface is the satellite
An elevator accelerates upward at 1 m/s2. When the elevator is moving upward at 2 m/s, a bolt drops from the ceiling which is 2.5 m above the?
In experiment PH04a, for the resistors in parallel circuit configuration, if we added to the circuit two additional parallel legs with each leg having a single 50 Ohm resistor
Blood with density 1.06 g/cm^3 and 10-kPa gauge pressure flows through an artery at 27cm/s. What fraction of the artery's area is obstructed
Two point charges are placed along a horizontal axis with the following values and positions: +1 µC at x = 0 cm, At what point (the coordinate) along the x axis is the electric field zero
Two harmonic sound waves reach an observer simultaneously. What is the difference in frequency of the two sound waves
Two 4.0-g spheres are suspended by 9.0-cm-long light strings. determine the electric field intensity that enables the spheres to be in equilibrium at ? = 12°
A certain helium-neon laser pointer, emitting light with a wavelength of 632 nm, How many photons are emitted by the laser pointer
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