Isotope A has a decay constant of 0.723 s-1 and isotope B has a decay constant of 0.514 s-1. Which isotope has a longer half-life?
A) isotope A B) isotope B
B
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The greatest inaccuracy in Copernicus's model of the solar system was that the planets
a. traveled in circular orbits with uniform motion. b. traveled on epicycles whose centers followed orbits around the Sun. c. traveled in elliptical orbits. d. were allowed to travel backwards in their orbits. e. orbited the Sun.
Where does the energy come from to create tidal bulges?
A) The Sun's gravity B) The orbital and rotational motion of the Earth and Moon C) The heat from Earth's core D) The movement of the Earth's oceans. E) The temperature difference between the Moon's surface and its core
What does equity have to do with the global warming issue? Explain
What will be an ideal response?
What is the near point of a farsighted person who can read a newspaper held 25 cm from his eyes when he wears 3.33 diopters glasses?
A) 1.5 m B) 0.50 m C) 1.9 m D) 0.75 m E) 0.60 m