A runner starts from rest and with an acceleration of 2.0 
travels a distance of 12 meters. The velocity of the runner at the end of the distance is
A. 3.4 m/s.
B. 5.7 m/s.
C. 6.9 m/s.
D. 7.5 m/s.
E. 8.1 m/s.
C. 6.9 m/s.
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____________________ are great lava flows covering 17% of the lunar surface
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A space vehicle is orbiting Earth in a circular orbit with a radius of 10,300,000 m. What is the minimum increase in speed that is needed for the vehicle to escape Earth's gravitational field?
The mass of Earth is 5.97 × 1024 kg and G = 6.67 x 10-11 N•m2/kg2. A) 6220 m/s B) 2580 m/s C) 3110 m/s D) 2840 m/s E) 7440 m/s
How are wavelength, frequency, and energy related for photons of light?
A) Longer wavelength means higher frequency and lower energy. B) Longer wavelength means lower frequency and lower energy. C) Longer wavelength means lower frequency and higher energy. D) Longer wavelength means higher frequency and higher energy. E) There is no simple relationship because different photons travel at different speeds.
A 6.0-?F capacitor is connected to an ac signal with a frequency of 60 Hz. If the maximum voltage applied to the capacitor is 8.0 V, what is the capacitive reactance?
A) 6.0 ? B) 440 ? C) 7.5 × 10-6 ? D) 740 ? E) 160 ?