A typical E. coli bacterium is measured in microns. Which of the following is a

Question

A typical E. coli bacterium is measured in microns. Which of the following is a
representation of a micron?
A) 10-15 m
B) 10-12 m
C) 10-9 m
D) 10-6 m
E) 10-3 m
2. How many cm2 equal a m2?
A) 10-4
B) 10-2
C) 102
D) 104
E) 106
3. A stone is thrown straight up from the surface of the Earth. What is its acceleration at the
highest point?
A) 9.81 m/s2 upward
B) 9.81 m/s2 downward
C) it is not accelerating at that point
4. The position, x, of an object is given by the equation x = A + Bt +Ct2, where t refers to time.
What are the dimensions of A, B, and C?
A) distance, distance, distance
B) distance, time, time
C) distance, time, time2
D) distance, distance/time, distance/time2
E) distance/time, distance/time2, distance/time3

Explanation / Answer

1.D 2.B 3.B 4.A

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