Florence, who weighs 120 lb, stands on a bathroom scale in an elevator. What will she see the scale read when the elevator is accelerating upward at 2.0 m/s2?
A) 86 lb
B) 1.4 102 lb
C) 96 lb
D) 1.2 102 lb
E) 1.6 102 lb
Question 2What was special about the Tunguska impact in Siberia on 1908?
A) the object exploded completely before it hit the ground
B) the object that hit was a comet and not an asteroid
C) the event had been predicted long before it happened
D) the impact created the biggest impact crater seen in recorded history
Question 3When atom A loses an electron to atom B,
A) atom A becomes more negative than atom B.
B) atom A acquires more neutrons than atom B.
C) atom A acquires less neutrons than atom B.
D) atom A becomes a positive ion and atom B becomes a negative ion.
E) atom A becomes a negative ion and atom B becomes a positive ion.
Question 4Which has the greatest effect on the flow of fluid through a pipe? That is, if you made a 10 change in each of the quantities below, which would cause the greatest change in the flow rate?
A) the fluid viscosity
B) the length of the pipe
C) the pressure difference
D) the radius of the pipe
E) the fluid density
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