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Air, like all fluids, exerts a buoyant force on objects. THusan object's apparent weight in air is slightly less than its weightin a vacuum. The density of air is about 1.3kg/m3 ...Estimate the buoyant force of the air of you in pounds ( yes, youin pounds). To get started you might approximate yourself as asimple geometric shape. What are the approximate dimensions of this shpae? What is its volume?
If a convex lens with n=1.30 and f=25 cm is immersed in a fluid with an index of refraction that is also 1.30, what is the new focal length of the lens
objects of various weights are hung from a rubber band that issuspended from a hook. The weights of the objects are plotted onthe graph against the stretch of the rubber band how can you tell from the graph whether or not the rubber band obeys hooke'..
A 200?F defibrillator capacitor is charged to 1500 V.When fired through a patient's chest, it loses 95% of its charge in 40 ms
A pot of water is boiling under one atmosphere of pressure. Assume that heat enters the pot only through its bottom, What is the temperature of the heating element in contact with the pot
A 200-turn circular loop of radius 55 cm is vertical, with its axis on a line running east to west. What is the magnitude of the torque on the loop
On the planet Zardem, the standard unit of time is the Zarsec, or Zs, where 1 Zs = 2.2s. how fast is the runner traveling
A grating has 530 rulings/mm and is 5.4 mm wide. How many higher orders of maxima can be seen
An outside loudspeaker (considered a small source) emits sound waves with a power output of125W. Find the intensity10.5m from the source.
What is the tangential acceleration of a bug on the rim of a 7 in. diameter disk if the disk moves from rest to an angular speed of 76 revolutions per minute in 4 s.
Sarge quickly approximates the rope to be a string with a very high spring constant. What is the speed of wave propagation on the rope
determine the mass of liquid ammonia that boils away before thermal equilibrium. Assume an excessive amount of liquid ammonia is present and that the liquid ammonia does not react with the copper.
A stone is dropped at t = 0. A second stone, with 2 times the mass of the first, is dropped from same point at t = 190 ms. (a) How far below the release point is the center of mass of two stones at t = 390 ms? (Neither stone has yet reached the gr..
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