Which of the following is a prototype of a new class of objects defined by the International Astronomical Union (IAU) as dwarf planets?
A) Pluto
B) Uranus
C) Titan
D) Triton
A
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Charge Q1 = 6.0 nC is at (0.30 m, 0), charge Q2 = -1.0 nC is at (0, 0.10 m), and charge Q3 = 5.0 nC is at (0, 0)
What are the magnitude and direction of the net electrostatic force on the 5.0-nC charge due to the other charges? (k = 1/4??0 = 8.99 × 109 N ? m2/C2) What will be an ideal response?
These two skaters have just pushed off against one another. One skater has twice the mass as the other. Which one will experience the greater velocity?
A. The heavier skater
B. The lighter skater
C. Neither, they both have the same
In simple harmonic motion, the acceleration is proportional to
A) the velocity. B) the frequency. C) the amplitude. D) the displacement. E) all of the above
Evaporation of raindrops in the atmosphere
A) warms the air. B) cools the air. C) does not happen, raindrops always reach Earth's surface. D) is greatest above polar ice caps.