The process by which geologists construct
an organized picture of the geology of large areas and
even entire continents is called?
a) fossil indexing.
b) correlation.
c) randomization.
d) time scale analysis.
b
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__________is an isotope of hydrogen in which the nucleus contains a proton and a neutron
A) Deuterium B) Neutrino C) Tritium D) Hydrogen-4
The fundamental frequency of a above middle C on the piano is 440 Hz. This is the tenor high A, but a convenient note in the mid-range of women's voices. When we calculate the wavelength, we find that it is
a. much shorter than the length of either a man's or woman's lips. b. shorter than the length of a man's lips, but about the length of a woman's lips. c. longer than a woman's lips, but about the length of a man's lips. d. much longer than the length of either a man's or a woman's lips. e. about the same length as either a man's or woman's lips.
The Bohr model pictures a hydrogen atom in its ground state as a proton and an electron separated by the distance a0 = 0.529 × 10^?10 m. The electric potential created by the electron at the position of the proton is
a. ?13.6 V. b. +13.6 V. c. ?27.2 V. d. +27.2 V. e. +5.12 × 10^9 V.
A Udimet 700 turbine blade is exposed to a temperature of 1200 K (2160 R) at a tensile stress of 140 MPa (20 ksi)? How many hours is the turbine blade expected to survive these conditions?
What will be an ideal response?