Bok globules are small, dark fragments of the interstellar medium
Indicate whether the statement is true or false
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Energy Conservation With Conservative Forces: Assuming negligible friction, what spring constant (force constant) would be needed by the spring in a "B-B gun" to fire a 10-g pellet to a height of 100 m if the spring is initially compressed by 0.10 m?
A. 20 N/cm B. 20 N/m C. 200 N/m D. 2000 N/cm E. 0.0020 N/m
Two uses of ultrasound are navigation by bats and controlling insects
Indicate whether the statement is true or false
Triton's retrograde orbit is consistent with it having
A) been spun out from a rapidly rotating Neptune B) been captured by Neptune's gravity C) undergone a massive impact D) formed from a rotating disk of gas and dust around Neptune
An acoustical engineer designing a music hall is most concerned with
A) modulation. B) forced vibrations. C) resonance. D) beats. E) reverberations.