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A jet fighter plane is launched from a catapult on an aircraft carrier. It reaches a speed
of 42 m/s at the end of the catapult, and this requires 2 s. Assuming the acceleration is
constant, what is the length of the catapult?
A) 16 m
B) 42 m
C) 24 m
D) 66 m
E) 84 m
The wavelength in Fig. 13-4
A) is 8 m.
B) is 4 m.
C) is 2 m.
D) is 1 m.
E) cannot be determined from the given information.
A 120-m long copper wire (resistivity 1.68 x 10-8 Ω ∙ m) has resistance 6.0 Ω. What is
the diameter of the wire?
A) 0.0065 mm
B) 0.065 mm
C) 0.65 mm
D) 0.65 cm
E) 0.65 m
In a resonating pipe which is open at one end and closed at the other, there
A) are displacement nodes at each end.
B) are displacement antinodes at each end.
C) is a displacement node at the open end and a displacement antinode at the closed
end.
D) is a displacement node at the closed end and a displacement antinode at the open
end.
