Which of the lines in the figure represents the normal to the surface at point P?
a.
1
b.
2
c.
3
d.
4
e.
none of the above
c
Physics & Space Science
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A pendulum swings through 10 cycles in 2 seconds. The frequency of the pendulum is
A. 5 Hz. B. 10 Hz. C. 0.1 Hz. D. 0.5 Hz. E. 2 Hz.
Physics & Space Science
An atom can be excited into a higher energy state by
a. emitting a photon. b. absorbing a photon. c. undergoing the photoelectric effect. d. decreasing its de Broglie wavelength. e. the uncertainty principle.
Physics & Space Science
Adams and Leverrier predicted the position of ________, which Galle confirmed
A) Jupiter B) Pluto C) Neptune D) Saturn E) Uranus
Physics & Space Science
A man's face is 30 cm in front of a concave spherical shaving mirror. If the image is erect and 1.5 times as large as his face, what is the radius of curvature of the mirror?
A) 40 cm B) 60 cm C) 100 cm D) 140 cm E) 180 cm
Physics & Space Science