A ball player wishes to determine pitching speed by throwing a ball horizontally from an elevation of 5 m above the ground. The player sees the ball land 20 m down range. What is the player's pitching speed?
A) 5 m/s
B) 10 m/s
C) 20 m/s
D) 25 m/s
E) none of the above
C
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Which of the following is NOT true about periodic markets around the globe?
A) In Africa, markets occur every 3 to 7 days based on ethnic differences. B) Korean periodic markets are timed with the lunar cycle. C) China's periodic markets are timed to fit 3 10-day cycles in a lunar month. D) Muslim markets operate every day of the week. E) Chinese markets operate within a 3-city arrangement of which one is the central market.
Which of the following is the range of wavelengths corresponding to the maximum amount of radiation emitted by the sun?
A. 0.5 micrometre B. 1 micrometre C. 10 micrometres D. 30 micrometres
Bacteria are not a major source of protein for infaunal organisms.
Answer the following statement true (T) or false (F)
What identifies a material as a liquid, solid, or gas?
a. Physical profile b. Chemical state c. Physical property d. State of matter