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In a large centrifuge used for training astronauts and pilots, a chamber is fixed at the end of a rigid arm that rotates in a horizontal circle. A trainee riding in the chamber of a centrifuge rotating with a constant angular speed of 3.0 rad/s experiences a centripetal acceleration of 2.8 times the acceleration due to gravity. In a second training exercise, the centrifuge speeds up from rest with a constant angular acceleration. When the centrifuge reaches an angular speed of 3.0 rad/s, the trainee experiences a total acceleration equal to 4.8 times the acceleration due to gravity.
(a) Determine how long is the arm of the centrifuge?
(b) Find the angular acceleration in the second training exercise?
A concave mirror with focal length 24cm is placed 40cm to the left of the object. Where is the image formed by the mirror-lens system
for your science fair project you need to design a diffraction grating that will disperse the visible spectrum 400-700
A rocket ship is 80m in length when measured before leaving the launching pad. what would its velocity be if a ground observer measured its length as 60m while it is in flight
A wooden plank is placed over a pit that is 5.00 m wide. A student stands in the middle of the plank and begins jumping upand down such that she jumps two times each second. What is the speed of the travsverse waves on the plank
In the figure below, the converging lens' focal length is 14.4 cm, d = 13.6 cm, and the diverging lens' focal length is -14.1 cm. Where is the image formed by the converging lens,
A ball is thrown vertically upward with a speed of +16.0 m/s. Determine how long does it take to reach its highest point
The TGV, Frances' high-speed train, pulls out of the Lyons station and is accelerating uniformly to is cruising speed. What is the tension in the strap
A heat engine with a thermal e?ciency of 37% does 175J of work per cycle. How much heat is extracted from the hot reservoir per cycle
A 2700 ml- flask is initially open to air at 19 degrees C and 1 atm pressure. It's then closed and immersed in boiling water. How many moles escape when the air is released
A 150 kg rock (density is 2500 kg/m 3 ) is dropped to a lake. Determine how much force the man needs to life the rock from the bottom of the lake
A Carnot engine operates between hot and cold reservoirs with temperatures 527 Degrees Celsius and -73 Degrees Celsius. how much heat is extracted per cycle from the hot reservoir
A set of narrow vertical slits is located a distance D from a screen. All the slits have the same width, equal to 32.5 µm. The intensity pattern in the figure is observed when light from a laser passes through the slits, illuminating them uniforml..
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