The scientific method is most effective in
A) making hypotheses.
B) gaining, organizing, and applying new knowledge.
C) discovering new things.
D) making theories.
E) performing experiments.
Answer: B
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Relative Velocity: An airplane flies between two points on the ground that are 500 km apart. The destination is directly north of the point of origin of the flight. The plane flies with an airspeed of 120 m/s. If a constant wind blows at 10 m/s toward the west during the flight, what direction must the plane fly relative to the air to arrive at the destination?
A. 4.8° east of north B. 5.9° east of north C. 85° west of north D. 4.8° west of north E. 5.9° west of north
RC Circuits: A charged capacitor is connected in series with a resistor and an open switch. At time t = 0 s, the switch is closed. Which of the graphs below best describes the charge Q on the capacitor as a function of time t?
A. A B. B C. C D. D E. E
Video 2 (Chapter 19): If you have a short focal length converging lens what can be said about the power of the lens?
A. The power is large and positive B. The power is small and positive C. The power is small and negative D. The power is large and negative.
The standard exam page is 8.50 inches by 11.0 inches. Its area in cm2 is
a. 19.5 b. 36.8 c. 93.5 d. 237. e. 603.