Pencil lead is made of ________.
A. graphite
B. galena
C. coal
D. gypsum
E. lead
Answer: A
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During coalescence, the percentage of colliding droplets that join together is called the:
A) droplet collection coefficient. B) coalescence efficiency. C) rain potential efficiency. D) coalescence condensation collection factor. E) none of the above
Which of the following pr°Cesses can generate the convective instability ass°Ciated with severe thunderstorms and tornadoes?
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A cannon recoils from firing a cannonball. The speed of the cannon's recoil is small because the
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