题目内容

Which of the SI prefixes is used to indicate 109?()

A. kilo
B. mega
C. giga
D. tera
E. nano

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Which of the following is not a SI base unit? ()

A. kelvin
B. kilogram
C. newton
D. second
E. meter

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To be dimensionally consistent, distance [], velocity [L/T], and acceleration [L/T2] must be related as follows. ()

A. distance = velocity2/acceleration
B. distance = velocity/acceleration
C. distance = velocity2*acceleration
D. distance = velocity*acceleration2
E. distance = velocity/acceleration2

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A major league pitcher is recorded as having thrown a 105 mph fastball. What is the speed of the pitch in m/s? One mile is equivalent to 1609m.()

A. 15 m/s
B. 235 m/s
C. 47 m/s
D. 34 m/s
E. 60 m/s

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Consider the ratio of the surface area of a cylinder to its volume. Assume the height is equal to its diameter. What happens to this ratio if the diameter of the cylinder decreases by a factor of 2? ()

A. Remains the same
B. Decreases by a factor of 2
C. Increases by a factor of 2
Decreases by a factor of 4
E. Increases by a factor of 4

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Which of the SI prefixes is used to indicate 109?()

A. kilo B. mega C. giga D. tera E. nano

Which of the following is not a SI base unit? ()

To be dimensionally consistent, distance [], velocity [L/T], and acceleration [L/T2] must be related as follows. ()

A major league pitcher is recorded as having thrown a 105 mph fastball. What is the speed of the pitch in m/s? One mile is equivalent to 1609m.()

Consider the ratio of the surface area of a cylinder to its volume. Assume the height is equal to its diameter. What happens to this ratio if the diameter of the cylinder decreases by a factor of 2? ()

A. kilo
B. mega
C. giga
D. tera
E. nano