Which of the following elements in your body is formed in stars?
A. calcium
B. carbon
C. oxygen
D. iron
E. All of these choices are correct.
Answer: E
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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.
High-speed stroboscopic photographs show that the head of a golf club of mass 200 grams is traveling at 55.0 m/s just before it strikes a 46.0-gram golf ball at rest on a tee. After the collision, the clubhead travels (in the same direction) at 40.0 m/s. Find the speed of the golf ball just after impact
Object and image for a plane mirror occur
A) along the same plane. B) equal distances from the mirror. C) at right angles to each other. D) all of the above E) none of the above
Simple Harmonic Motion: In simple harmonic motion, when is the magnitude of the acceleration the greatest? (There could be more than one correct choice.)
A. when the speed is a maximum B. when the displacement is a zero C. when the magnitude of the displacement is a maximum D. when the potential energy is a maximum E. when the kinetic energy is a minimum