The transport of large particle sizes is greatest
A) in turbulent streams.
B) when stream speed is very fast.
C) where the gradient exceeds the base level.
D) on the inside of a meander.
Answer: B
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Power: If the resistance in a constant voltage circuit is doubled, the power dissipated by that circuit will
A. increase by a factor of two. B. increase by a factor of four. C. decrease to one-half its original value. D. decrease to one-fourth its original value.
Which of the following best describes a breadcrumb trail?
A. A hidden menu that expands when a visitor points to or clicks on it. B. A menu that drops down to display subcategories when the visitor points to or clicks on it. C. An index of pages on a website, presented on a separate site map page. D. A hierarchical outline or horizontal list that shows the path from the home page to the currently viewed page.
For a certain metal, light of frequency 7.24 × 10-14 Hz is just barely able to dislodge photoelectrons from the metal
(h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J, e = 1.60 × 10-19 C) (a) What will be the stopping potential if light of frequency 8.75 × 10-14 Hz is shone on the metal? (b) What is the work function (in electron-volts) of this metal?
Linear momentum is conserved in __________ collisions
Fill in the blank(s) with correct word