The proton is made up of which one of the following quark combinations (up, down, strange, charm, top, bottom)?
A) ddu B) ttb C) bst D) uud E) udd
D
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Look at full-color photos in your textbook with a magnifying glass and you'll see inks of
A) red, green, and blue. B) red, green, blue, and black. C) magenta, cyan, and yellow. D) magenta, cyan, yellow, and black. E) none of these
Double-pane windows contain nitrogen rather than air to prevent
A) gas escape. B) thermal conduction. C) condensation. D) heat flow.
If you connect two identical storage batteries together in parallel, and place them in a circuit, the combination will provide
A) twice the voltage and twice the total charge that one battery would. B) twice the voltage and the same total charge that one battery would. C) the same voltage and twice the total charge that one battery would. D) half the voltage and half the total charge that one battery would. E) half the voltage and twice the total charge that one battery would.
If a 20 and a 40 ohm resistor are wired in parallel to a 20V source, what will be the current in the 40 ohm resistor?
a. 0.33 b. 0.5 c. 1.0 d. 2.0 e. 3.0 amps