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Question: As you finish listening to your favorite compact disc (CD), the CD in the player slows down to a stop. Assume that the CD spins down with a constant angular acceleration.
A) If the CD rotates clockwise (let's take clockwise rotation as positive) at 500rpm (revolutions per minute) while the last song is playing, and then spins down to zero angular speed in 2.60s with constant angular acceleration, what is alpha_vec, the angular acceleration of the CD, as it spins to a stop?
B) How many revolutions does the CD make as it spins to a stop?
Tank forms a hemisphere with radius R. It's full of water at thebeginning. It a small aperture with surface A at the bottom. Findz(t), the height of water surface as function of time.
a. A healthy young man standing at a distance of 7 m from a ll"8 m high building sees a kid slipping from the top floor. With what speed (assumed uniform) should he run to catch the kid at the arms height (1"8 m) ?
Given the angular speed omega, find out the radius R(omega) at which the mass rotates without moving toward or away from the origin. Determine the radius in terms of k, L, M, and omega.
An observer, whose eyes are 1.99 m above the ground, is standing 35.0 m away from a tree. The ground is level, and the tree is growing perpendicular to it. The observer's line of sight with the treetop makes an angle of 23.0° above the horizontal. Ho..
The orbital period of this comet is estimated to be about 30,000 years. Find the semi-major axis of this comet's orbit. Compare it to the average sun-Pluto distance and to the distance to Alpha Centauri, the nearest star to the sun, which is 4.3 l..
a river of width 32 m flows in a straight line the x direction with a speed of 0.25 ms. a boat is rowed such that it
An ice skater has a moment of inertia of 2.5 kg*m2 when his arms are outstretched and a moment of inertia of 1.0 kg*m2, what will his angular speed be when they are tucked in
question1a 35 kg uniform ladder is leaned against a building. the 5 meter tall ladder makes an angle of 60 degrees with
How long did it take the object to get from the position x = 2.0 m to the position x = 3.0 m?Express your answer(s) using two significant figures. If there is more than one answer enter your answers in ascending order separated by commas.
an electric dipole consists of charges 2e and -2e separated by 0.53 nm. it is in an electric field of strength 4.60 106
A flywheel comprises a uniform circular disk with a mass of 101.0 kg and a radius of 1.1 m. It rotates with an angular velocity of 1183 rev/min. what is the tangential force
the mass of a copper atom is 5.55 x 10-25 kg and the density of copper is 8 920 kgm3 .a determine the number of atoms
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