A car is approaching a radio station at a speed of 25.0 m/s. If the radio station broadcasts at a frequency of 74.5 MHz, what change in frequency does the driver observe?
A) 98.3 Hz
B) 6.21 Hz
C) 726 Hz
D) 67.0 Hz
E) 64.5 Hz
B
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Indicate whether the statement is true or false
Three particles are placed in the xy plane. A 40-g particle is located at (3, 4) m, and a 50-g particle is positioned at (?2, ?6) m. Where must a 20-g particle be placed so that the center of mass of this three-particle system is located at the origin?
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