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A thin thread is wrapped around a pulley of moment of inertia I and radius R, and is connected to an object of mass M. You release the mass from rest, and I would like to know the acceleration of the object as it falls, in terms of M, I, R, g.
The negative pion is an unstable particle with an average lifetime of 2.1 x 10-8 s, Find what distance, as measured in the laboratory, does the pion travel during its average lifetime
An ideal spring is used to fire a 15.0-g block horizontally. The spring has a spring constant of 40 N/m, The kinetic energy of the pellet as it leaves the spring is
The frequency of an opera singer is 450 Hz. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observer who is running down the road towards the opera singer with a speed 25.0 m/s.
Tensile tests of structural steel indicate that it fails when the axial tensile strain is 1800u. Determine the maximum change in length
A rectangular loop of wire carrying a 4.0-A current is placed in a magnetic field of 0.60 T. What is the area of this loop
Two stars orbit about their common center of mass. One of the stars has mass m1 and moves in a circular orbit at a distance a from the center of mass. What is the ratio of the orbital periods
An oil slick is 375 nm thick. The index of refraction of the film is 1.25. The oil slick is floating on the top of a water surface that has an index of refraction of 1.33. Sunlight falls on the oil slick. What color or colors will you see reflected d..
A planet of mass 7*10^24 is at location m A star of mass 8*10^30 is at location m. What is the force exerted on the planet by the star ?
Two forces, F1and F2 , act on an object. The magnitude of F1 is 12.45 N, and it is at an angle of 32o above the x-axis in the second quadrant. What are the magnitude and direction of the resultant force
A 6x10^-6 F capacitor is initially charged to 100V, then is connected across a 500Ohm resistor. What is the initial charge on the capacitor
A +18 µc charge is 15 cm to the right of a -12 µc charge. What is the force on the positive charge
A 32.8 g piece of aluminium at 72 is dropped into a cavity in an extremely large block of ice at 0. How much ice mice does aluminium piece melt.
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