(7) A lank contains a slab of glass som thick and of seloa dive index .
16. Above this a depth of ºu.5cm of a liquid of one sua chive
index t. s and upon this floats 6cm of water (M= 413). To an
Observer looking down forom above, what is the apparent
position of a mark
a mark on the bottom of the tank?
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Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?

The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? ab c d