Most of the extrasolar planetary systems discovered to date are
A) very similar to our own solar system with inner rocky terrestrial planets and outer gaseous Jovian planets
B) similar to our solar system in having inner rocky terrestrial planets but different in having no Jovian planets
C) identical to our own with the same number and types of planets as our own solar system
D) quite different than our own solar system, many with Jovian planets found close to their parent stars
D
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Temperature Scales: Express -40°C in °F.
A. -72°F B. -54°F C. -40°F D. 4.4°F
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Answer the following statement true (T) or false (F)
A tow truck exerts a force of 3000 N on a car, which then accelerates at 2 m/s2. What is the mass of the car?
A) 500 kg B) 1000 kg C) 1500 kg D) 3000 kg E) none of these
A charged particle moves in a region of uniform magnetic field along a helical path (radius = 4.0 cm, pitch = 20 cm, period = 2.0 ms). What is the speed of the particle as it moves along this path?
A. 0.13 km/s B. 0.10 km/s C. 0.16 km/s D. 0.23 km/s E. 0.06 km/s