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In the days before compact discs and MP3 players (ancient history!), music was recorded in scratches in the surface of vinyl-coated disks called records. In a typical record player, the record rotated with a period of 0.769 s. Find the centripetal acceleration of a point on the edge of the record. Assume a radius of 15.24 cm.
m/s2
A uniform round tube of diameter 6.32 cm has two piston tops which are balanced at exactly the same height due to a mass (m) on the left side, What mass (m) is required to balanced the system
A system of 1595 particles, each of which is either an electron or a proton, has a net charge of -5.328×10^-17 C. How many electrons are in this system
q1. a 1.2 kg mass attached to a spring oscillates with amplitude of 6.3 cm and a frequency of 1.1 hz. what is its
Two long wires carrying equal currents I are at right angles to each other, but don't quite touch. Describe the magnetic force one exerts on the other
Unpolarized light with an intensity of 830 W / m2 is incident on a polarizer with an unknown axis. What is the angle between the axes of the polarizers
A 53.26 g sample of a substance is initially at 29.9 °C. After absorbing 2429 J of heat, what is the specific heat of the substance
A skydiver opens the parachute at the moment when he is 540 meters above the ground and his speed (right before opening the parachute) is 97m/s. What should be the magnitude of the air resistance force
A block (mass = 1.8 kg) is hanging from a massless cord that is wrapped around a pulley (moment of inertia = 1.2 x 10-3 kg·m2), find the angular acceleration of the pulley
In 1926, Albert Michelson measured the speed of light with a technique similar to that used by Fizeau. Find the required angular speed
The infamous chicken is dashing toward home plate with a speed of 5.6m/s when he decides to hit the dirt. The chicken slides for 1.0s , just reaching the plate as he stops (safe, of course).
q1. a force vector has a magnitude of 569 newtons and points at an angle 41o of below the positive x axis. what is a x
One mole of a monatomic gass initially at 273 K and 1 atm is compressed isothermally (T constant) from volume 22.4 L to 11. 4 L, Find the final pressure and draw a PV diagram, Labeling the initial and final states 1 and 2
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