If a microscopic particle's uncertainty in velocity is reduced,
A) its uncertainty in position must decrease enough to satisfy the uncertainty principle.
B) its uncertainty in position must remain unchanged.
C) its uncertainty in position must increase enough to satisfy the uncertainty principle.
C
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A bus is designed to draw its power from a rotating flywheel that is brought up to its maximum speed (3000 rpm) by an electric motor. The flywheel is a solid cylinder of mass 250 kg and radius 0.500 m (Icylinder = MR2/2). If the bus requires an average power of 10.0 kW, how long will the flywheel rotate?
a. 154 s c. 463 s b. 308 s d. 617 s
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A car moving at a steady 10 m/s on a level highway encounters a depression that has a circular cross-section with a radius of 30 m. The car maintains its speed as it drives through the depression
What is the normal force exerted by the seat of the car on a 60.0-kg passenger when the car is at the bottom of the depression? A) 200 N B) 390 N C) 790 N D) 490 N E) 590 N
What is the frequency of yellow-green light that has a wavelength of 550 nm?