In a large tank of liquid, the hydrostatic pressure at a given depth is a function of
a. depth.
b. surface area.
c. liquid density.
d. Choices a and c are both valid.
d
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The value of a wavelength in the Balmer series is 372.1 nm. What is the value of n?
A) 6 B) 3 C) 9 D) 10 E) 14
Briefly explain why starburst galaxies appear fairly ordinary when they are observed in visible light but extraordinary when they are observed in infrared light
What will be an ideal response?
Pierre performs a maneuver with his yo-yo called "around the world", where he swings the yo-yo in a vertical circle. When the yo-yo is at its highest point, which forces provide the centripetal acceleration?
a. friction b. gravity c. normal force d. tension e. Two of the above choices are correct.
What beat frequency is produced by 240-Hz and a 246-Hz tuning forks?
A) 6 Hz B) 12 Hz C) 240 Hz D) 245 Hz E) none of the above