Which of the following statements about the stages of nuclear burning in a massive star is not true?

A) Each successive stage creates an element with a higher atomic weight.
B) As each stage ends, the core shrinks further.
C) Each successive stage of fusion requires higher temperatures than the previous stages.
D) Each successive stage lasts for approximately as long as the first, hydrogen fusion stage.


D

Physics & Space Science

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The mass of a proton is 1.6726 × 10-27 kg and the mass of a neutron is 1.6606 × 10-27 kg. A proton captures a neutron forming a deuterium nucleus. One would expect the mass of this nucleus to be

A) equal to (1.6726 + 1.6606 ) × 10-27 kg. B) less than (1.6726 + 1.6606 ) × 10-27 kg. C) greater than (1.6726 + 1.6606 ) × 10-27 kg.

Physics & Space Science

The change in entropy of 20.0 moles of ideal monatomic constant volume gas as it changes from an initial temperature 300 K to its final temperature is 200 J/K. What is the final temperature of the gas?

A) 669 K B) 562 K C) 427 K D) 187 K E) 345 K

Physics & Space Science

All neutron stars are pulsars, but not all pulsars are neutron stars

Indicate whether the statement is true or false

Physics & Space Science

A gas in which the pressure no longer depends on the temperature of the gas is said to be ____________________

Fill in the blank(s) with correct word

Physics & Space Science