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In a large centrifuge used for training pilots and astronauts, asmall chamber is fixed at the end of a rigid arm that rotates in ahorizontal circle. A trainee riding in the chamber of a centrifugerotating with a constant angular speed of 3.0 rad/s experiences acentripetal acceleration of 3.3 times the acceleration due togravity. In a second training exercise, the centrifuge speeds upfrom rest with a constant angular acceleration. When the centrifugereaches an angular speed of 3.0 rad/s, the trainee experiences atotal acceleration equal to 5.5 times the acceleration due togravity. (a) How long is the arm of thecentrifuge? (b) What is the angular accelerationin the second training exercise?
two strings of length 0.78 m hang from the same point on the ceiling. at the end of each string there is a small ball
A 29.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 85.0 N and is directed at the angle of 30.0° above the horizontal. Find out the coefficient of kinetic friction.
Review Interactive Solution 12.47 for help in approaching this problem. When resting, a person has a metabolic rate of about 7.05 x 105 joules per hour. find the water temperature in degrees Celsius after half an hour
A resistor of 331 ohms is connected in series with a capacitor of 54.0 µF capacitance. what is the phase shift between the current and the voltage
Assume that a CCD pixel is a uniformly made cube of silicon. The relation between pixel size and full well capacity is roughly true for real CCDs. Discuss what applications might require a CCD with large pixels and with small pixels.
a vertical cylinder of cross-sectional area 0.06 m2 is fitted with a tight-fitting friction- less piston of mass 5.4
an object is 19 cm in front of a diverging lens that has a focal length of -9 cm. how far in front of the lens should
A 75 g spherical ball rolls without slipping down a ramp that makes an angle of 20 degrees with the horizontal. Find the magnitude and direction of the frictional force on the ball
in a region of two-dimensional space there are three fixed charges 4 mc at 00 -4 mc at -17 mm5 mm and 5 mc at 13 mm1
A 28.2-cm-long uniformly charged rod is sealed in a container. The total electric flux leaving the container is 1.47 106 N m2/C. Determine the linear charge distribution on the rod.
In a tractor-pulling contest, a 2500 kg tractor pulls a 5000 kg sledge with an acceleration of 0.61 m/s2. (The tractor rolls on its wheels; the sledge slides.), What is the force of the sledge on the tractor
a particle with a charge of -60.0 nc is placed at the center of a nonconducting spherical shell of inner radius 20.0 cm
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