A beetle (black dot on the top view shown below) sits on a rapidly rotating turntable. The table rotates faster and faster, and eventually the beetle loses its grip. What is its subsequent trajectory relative to the ground (assuming it cannot fly)?
A. A
B. B
C. B
D. D
E. E
B. B
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The velocity of a particle (m = 10 mg, q = ?4.0 ?C) at t = 0 is 20 m/s in the positive x direction. If the particle moves in a uniform electric field of 20 N/C in the positive x direction, what is the particle's speed at t = 5.0 s?
a. 60 m/s b. 20 m/s c. 45 m/s d. 40 m/s e. 70 m/s
Double-Slit Interference: In a two-slit experiment using coherent light, the distance between the slits and the screen is 1.10 m, and the distance between the slits is 0.100 mm. If the first-order bright fringe is measured to be 3.40 cm from the centerline, what is the wavelength of the light?
A. 354 nm B. 241 nm C. 133 nm D. 3.09 ?m E. 2.11 ?m
Directly above Earth's equator lies the ________ in the sky.
A. Celestial equator B. ecliptic C. North Celestial Pole D. South Celestial Pole
A runner runs 10 m from the origin toward the WEST to point A. He then runs from point A 20 m more toward the EAST to point B. He then runs from point B 30 m more toward the WEST to point C. The runner's total displacement from the origin to point C is
A. 60 m toward the WEST. B. 50 m toward the WEST. C. 20 m toward the WEST. D. 10 m toward the WEST. E. 0 m.