Which of the above images best depicts a water solution of a weak acid (represented by HA)?
A) A
B) B
C) C
D) All of the above are weak acids.
E) None of the above are weak acids.
Answer: B
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"Half integral spin" means spin
a. 1/2 c. 1/2, 3/2, 5/2, ... b. 1/2, 1, 3/2, 2, ... d. none of the above
Which of the following is an example of re?ection or scattering?
A) Red light hits a red sweatshirt. B) Visible light does not pass through a black wall. C) Light comes from your computer screen. D) Blue light hits a red sweatshirt.
What do you notice about the relationship between the angular size of the galaxy and its redshift (how far the wavelength is shifted)?
A: The redshift tends to be larger if the angular size is smaller. B: The redshift tends to be smaller if the angular size is smaller. C: There seems to be no relationship between redshift and angular size.
Refracting Telescope: The length of the telescope is 1.60 m, and it has a magnification of 60.0. What is the focal length of the objective lens?
A. 60.0 cm B. 157 cm C. 100 cm D. 128 cm E. 96.0 cm