A student investigates how the current through a filament light bulb varies with the potential difference across it.
(a) Draw a diagram of a circuit the student could use to obtain suitable measurements for a range of
potential difference from 0 V to 12 V.

Which material produces static charge when rubbed?

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

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.