A 1056-hertz tuning fork is struck at the same time as a note on the piano and you hear 2 beats/second. You tighten the piano string very slightly and then hear 3 beats/second. What is the frequency of the piano string?
A) 1053 hertz
B) 1054 hertz
C) 1056 hertz
D) 1058 hertz
E) 1059 hertz
Answer: E
You might also like to view...
A cable is 100 m long, has a cross-sectional area of 1.0 mm2, and is made of a material having a Young's modulus of 1.0 × 1011 N/m2. If a 1000-N force is applied to stretch the cable, how far does it stretch?
A) 0.0010 m B) 0.010 m C) 0.10 m D) 1.0 m E) 10 m
A hydraulic lift has a small piston with a diameter 5.0 cm piston and the large piston with a diameter of 25 cm. What force must be applied on the small piston in order to lift a car on the large piston that weighs 13,000 N?
A. 520 N B. 5200 N C. 260 N D. 2600 N
Where on Earth can you observe all the stars in the sky over an entire year?
A) North Pole B) Arctic Circle C) Tropic of Cancer D) Equator E) Everyone on Earth can see the whole sky.
The most recent features on the Moon's surface are the bright rayed craters like Copernicus, sitting atop the older mare flows
Indicate whether the statement is true or false