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While a person is walking, his arms swing through approximately a 45.0 degree angle in 0.420s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. A typical arm is 70.0cm long, measured from the shoulder joint.
A. What is the acceleration of a 0.900 gram drop of blood in the fingertips at the bottom of the swing?
B. Find the force that the blood vessel must exert on the drop of blood in part (a).
An aquarium contains a 5-cm layer of water (n = 1.333) floating on top of carbon tetrachloride (n = 1.461). If an angle of incidence into water from the carbon tetrachloride is 20, what is the angle of refraction into the air.
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When burned, 3.7 tons of coal releases the amount of energy that you use over the course of a year in the form of heat. How many tons of coal are required to provide you with your yearly energy use if you were to get that energy from a coal burnin..
The mass of nitrogen molecule, N2, is 4x10^26 kg. What is its root mean square (rms) speed at 40 degrees Celsius
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A woman with mass 50 kg stands at the rim of a large disk rotating at 0.5 rev/s about its center axis. What is the difference in energy of the system
The output from a one curie Co60 source is 1.25 R/hr at one meter. What is the radiation intensity at three meters from a 4 Curie source
A 1.0mm -diameter, 40cm -long copper wire carries a 3.5A current, What is the potential difference between the ends of the wire
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