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A CD has a playing time of 53.2 min. When the music starts, the CD is rotating at an angular speed of 504 rpm. At the end of the music, the CD is rotating at 203 rpm. Evaluate the magnitude of the average angular acceleration of the CD.
Gold, which has a mass of 19.32 g for each cubic centimeter of volume, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber, what is the area of the leaf in square meters
question an empty rubber balloon has a mass of 0.0109 kg . the balloon is filled with helium at a density of 0.178 kgm3
The 1900-turn coil in a dc motor has an area per turn of 1.1 10-2 m2. The design for the motor specifies that the magnitude of the maximum torque is 5.8 N · m, What is the current in the coil
a steam power plant receives heat from a furnace at a rate of 280 gjh. heat losses to the surrounding air from the
A slingshot fires a pebble from the top of a building at a speed of 14.0 m/s. The building is 28.0 m tall. Ignoring air resistance, find the speed with which the pebble strikes the ground
In a spherical metal shell of radius R, an electron is shot from the center directly toward a tiny hole in the shell, What is the magnitude of the electron's acceleration
question what is the value of the inductance l so that the above circuit carries the largest current?data r
write a three to five 3-5 page paper in which you1 procedures in the physical sciences challenges in
Consider a comet in a long, thin elliptical orbit with a semi-major axis of one AU. Illustrate what can you say about the sidereal period of this comet?
The heart requires a continuous flow of blood maintain normal function. The average length of the mid left anterior descending coronary artery is 11 cm, Calculate the decrease in pressure along this artery
one of the lasing transitions of an argon ion laser is at 488 nm and the transition probability aul 7.8 x 107s. the
A world-class sprinter accelerates to his maximum speed in 4s . He then maintains this speed for the remainder of a 100m race, What is his average acceleration for the entire rac
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