Which planet had the Great Dark Spot in 1989, but had lost it by 1995?
A) Jupiter B) Saturn C) Mars D) Neptune E) Uranus
D
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Lunar eclipses can occur only during a ________
A) third quarter moon B) first quarter moon C) new moon D) full moon
When resistors are connected in parallel, we can be certain that
A) the same current flows in each one. B) the potential difference across each is the same. C) the power dissipated in each is the same. D) their equivalent resistance is greater than the resistance of any one of the individual resistances.
A mosquito flying at 3 m/s that encounters a breeze blowing at 3 m/s in the opposite direction has a speed of
A) 0 m/s. B) 3 m/s. C) 4 m/s. D) 6 m/s.
A solid rock, suspended in air by a spring scale, has a measured mass of 8.50 kg. When the rock is submerged in water, the scale reads 4.00 kg. What is the density of the rock? (water density = 1 000 kg/m3)
a. 6.8E+2 kg/m3 b. 8.9E+2 kg/m3 c. 3.2E+2 kg/m3 d. 1.9E+3 kg/m3 e. 1.9E+6 kg/m3