A flute behaves like a tube open at both ends. If its length is 70.0 cm, and the speed of sound is 340 m/s, what is its fundamental frequency in Hz?
a. 121 Hz
c. 243 Hz
b. 159 Hz
d. 260 Hz
C
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Which of the following statements about various stages of core nuclear burning (hydrogen, helium, carbon, and so on) in a high-mass star is not true?
A) Each successive stage creates an element with a higher atomic number and atomic mass number. B) As each stage ends, the reactions that occurred in previous stages continue in shells around the core. C) Each successive stage lasts for approximately the same amount of time. D) As each stage ends, the core shrinks and heats further.
According to modern science, approximately how old is the Sun?
A) 4 1/2 billion years B) 25 million years C) 10,000 years D) 400 million years
Kirchhoff's junction rule is an example of
A) conservation of energy. B) conservation of charge. C) conservation of momentum. D) conservation of energy and momentum.
What is the period of revolution of a planet in circular orbit around a star of 4.0 solar masses if it is at a distance from the star equal to that of the Earth from the Sun?
What will be an ideal response?