On this graph, the time corresponding to the point at the far lower right of the diagonal line represents
A) the age of the universe today, in seconds.
B) age of the universe at the time the cosmic microwave background was released.
C) the Planck time.
D) the amount of time required for nucleosynthesis in the early universe.
A) the age of the universe today, in seconds.
You might also like to view...
Scientists hope that some day they will be able to produce a theory which will combine the strong force, the weak nuclear force, and electromagnetism. This theory has been called
A) The Grand Unified Theory. B) The Theory of Everything. C) The Unified Field Theory. D) The Electroweak Theory. E) The Electrostrong Theory.
Chondritic meteorites provide important clues because they are believed to
A. contain grains from the first material that condensed out of the Solar nebula. B. be the only source of the necessary amino acids required for life. C. be the source of all coal found on Earth. D. contain many rare metals.
The most efficient form of locomotion in the animal kingdom is
A) a human walking. B) a human on a bicycle. C) a propeller-driven airplane. D) a bird flying. E) railroad trains.
A book rests on a table, and the table rests on the ground. Which of the following pairs of forces forms a force pair, or action-reaction pair, obeying Newton's law of force pairs?
A) Gravity pulling down on the table and the book pushing down on the table. B) The ground pushing up on the table and the book pushing down on the table. C) The table pushing up on the book and the book pushing down on the table. D) Gravity pulling down on the book and the book pushing down on the table. E) Gravity pulling down on the book and the table pushing up on the book.