Which phase of the moon do you expect to see rising at dawn?
A. third quarter
B. first quarter
C. full moon
D. waning crescent
Answer: D
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A hornet circles around a pop can at increasing speed while flying in a path with a 12-cm diameter. We can conclude that the hornet's wings must push on the air with force components that are
A. straight down. B. down and inwards. C. down and outwards. D. down and backwards. E. down, backwards and outwards.
Which of the following elements are in the same group as silicon (Si)?
A) C B) P C) As D) B E) none of the above
In deriving the axial electric field for the ring-shaped charge distribution and the electric field from a long line of charge, the component perpendicular to the resulting field is zero because of what physical property?
A) only net charge is important B) positive and negative charges cancel C) superposition D) integration E) symmetry
A guitar string is supposed to have a fundamental frequency 256 Hz. It currently has a fundamental frequency 248 Hz. What percentage increase in tension is required to bring the guitar string into tune?
A) 3.13% B) 6.56% C) 1.60% D) 6.15% E) 3.23%