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1. A biologist wishes to determine the density of an oil sample that she has extracted from a rare species of plant. She puts some distilled water (with some food coloring added for visibility) in a small U-tube and then pipettes the oil sample in on top of the water. The system comes into equilibrium as shown below. If the water has a density of 1000 kg/m3 then what is the density of the oil?
Sodium atoms moving at 1000 m/s are incident on a slit having a width of 100 nm. At 3 m from the slit, what is the approximate transverse width of the sodium atoms wave function? These are typical values for experiments in atom optics.
A 2.71 kilogram bucket is attached to a disk-shaped pulley of radius 0.115 meter and mass 0.787 kilogram. Calculate what is the angular acceleration of the pulley
can a person in principle travel from earth to the galactic center which is about 2.30times104 lightyears distant in a
Suppose that a standing wave on the flagpole gives rise to a sound wave of the same frequency. A person would be able to hear the sound produced by the above standing wave, What is the lowest flagpole harmonic the mouse can hear
As observed from Earth, rocket Alpha moves with speed 0.802c and rocket Bravo travels with a speed of 0.692c. What is the speed of rocket Alpha as measured from rocket Bravo
What is the gauge pressure of the air in the tires when its temperature rises to 27 .00C and its volume increases to 1.67 x 10-2 m3? Assume atmospheric pressure is 1.01 x 105 Pa.
A space station in the form of a large wheel, 311m in diamter, rotates to provide an "artificial gravity" of 5.2m/s^2 for people located on the outer rim. Find the rotational frequency of the wheel
A homogeneous sphere S, a uniform cylinder C, and a thin pipe P are in contact when they are released from rest on the incline shown. Knowing that all three objects roll without slipping, determine, after 6 s of motion, the clear distance between
Suppose two electrons in an atom have quantum numbers n = 3 and l =1. (a) How many states are possible for those two electrons? (Keep in mind that the electrons are indistinguishable.)
The tub of a washer goes into its spin cycle, starting from rest and gaining angular speed steadily for 7.00 s, Through how many revolutions does the tub turn while it is in motion
A father pulls his young daughter on a sled with a constant velocity on a level surface a distance of 10m. how much work does the father do
A wooden block with equal sides of 4 cm is floating in water. If the density of the block is half the density of water, how far is it from the water to the top of the block?
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