A deuteron is captured by an oxygen-16 atom which in turn emits a proton. What is the element and mass number of the product isotope?
a. oxygen-15
c. nitrogen-15
b. fluorine-15
d. oxygen-17
D
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The Miller experiment created
a. life. b. artificial proteins. c. DNA. d. simple molds. e. amino acids.
A pair of narrow slits, separated by 1.8 mm, is illuminated by a monochromatic light source. Light waves arrive at the two slits in phase,
and a fringe pattern is observed on a screen 4.8 m from the slits. If there are 5.0 complete bright fringes per centimeter on the screen near the center of the pattern, what is the wavelength of the monochromatic light? A) 550 nm B) 600 nm C) 650 nm D) 700 nm E) 750 nm
A solid object labeled A weighs more than another solid object labeled B. Which of the following are true?
a. A occupies more volume than B. b. A has a greater weight density than B. c. A has a greater specific gravity than B. d. A has greater volume but lesser weight density than B. e. none of the above
Which type of asteroid is classified only slightly red, mostly consisting of an iron-nickel alloy?
a. C-type b. F-type c. M-type d. S-type e. V-type