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If a piece of photographic film is placed at the location of a real image, the film will record
the image. Can this be done with a virtual image? How might one record a virtual image?
A spherical air bubble in water can function as a lens. Is it a converging or diverging lens?
How is its focal length related to its radius?
The bottom of the passenger-side mirror on your car notes, “Objects in mirror are closer than they appear.” Is this true? Why?
You may have noticed a small convex mirror next to your bank’s ATM. Why is this mirror
convex, as opposed to flat or con- cave? What considerations determine its radius of curvature?
Write a program that deletes duplicate elements from a queue.
Requirements:
No global decelerations
Test run the code in main
Normally, when you think of a metal in water, you imagine it sinking. Surprisingly, the first three alkali metals all float because they are less dense than water. They also move around the surface as bubbles of gas are produced. What is the gas?
A 516.7-mg sample containing a mixture of K2SO4 and (NH4)2SO4 was dissolved in water and treated with BaCl2, precipitating the SO4 2– as BaSO4. The resulting precipitate was isolated by filtration, rinsed free of impurities, and dried to constant weight, yielding 863.5 mg of BaSO4. What is the %w/w K2SO4 in the sample?
As we move down the alkali metals group, from lithium to sodium to potassium, the elements become progressively:
A ball with a mass 0.5 kg is dropped from a height of 10 m to the ground and bounces back to a height of 7m. How much potential energy does the ball lose
How much work is done on the block if a 10.0 kg block was accelerated at 5.0 m/s2 with a distance of 2.5 m across a frictionless table?
#340153 on Dec 2023