A string on a guitar is plucked. If, at this instant, someone touches this guitar string at its center, at which of its harmonics given below would the string be able to vibrate? sity?
1.at the first harmonic only
2.at the first and third harmonics
3.at the second and fourth harmonics
4.at the first and second harmonics
3
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Answer the following statement(s) true (T) or false (F)
1. Figure N1.6 shows the acceleration for an object moving clockwise around the circle. If the object moves counterclockwise around the circle, its acceleration points outward instead of inward.
A galvanometer calibrated to read current is
A) an ammeter. B) a voltmeter. C) an ohm meter. D) none of the above
A ball thrown vertically from ground level is caught 3.0 s later when it is at its highest point by a person on a balcony which is 14 m above the ground. Determine the initial speed of the ball
a. 19 m/s b. 4.7 m/s c. 10 m/s d. 34 m/s e. 17 m/s
Which of the beams is due to alpha particles?
A) a B) b C) c D) all of the above E) none of the above