A star more massive than our Sun
A) will have a longer lifetime
B) will have a shorter lifetime
C) will have the same lifetime as the Sun
D) could have either a longer lifetime or a shorter lifetime depending on its chemical composition
B
You might also like to view...
Two equal point charges are separated by a distance d. When the separation is reduced to d/4, what happens to the force between the charges?
A. it decreases by a factor of 4 B. it increases by a factor of 4 C. it increases by a factor of 8 D. it increases by a factor of 16 E. it increases by a factor of more than 16
Based on everything you have learned about the formation of our solar system, which of the following statements is probably not true?
A) Only a tiny percentage of stars are surrounded by spinning disks of gas during their formation. B) Planets always tend to orbit their star in the same direction and approximately the same plane. C) Other solar systems will also have planets in the two basic categories of terrestrial and jovian. D) Other planetary systems will have far more numerous asteroids and comets than actual planets.
Galaxies contain less mass as dark matter than as visible stars
Indicate whether the statement is true or false
A baseball is hit with a bat and, as a result, its direction is completely reversed and its speed is doubled
If the actual contact with the bat lasts 0.45 s, what is the ratio of the magnitude of the average acceleration of the ball to its original speed? A) 6.7 s-1 B) 4.4 s-1 C) 2.2 s-1 D) 0.15 s-1