Stars are eternal and unchanging in your lifetime but not over a star's lifetime
a. True
b. False
Indicate whether the statement is true or false
False
RATIONALE: Refer to variable stars like RR Lyrae.
You might also like to view...
Which of the following aluminum alloys is strain hardened and stabilized to full hardness?
(a) 5052-H38 (b) 2024-T62 (c) 3003-H18 (d) 2090-T86
It is more difficult to measure the coefficient of volume expansion of a liquid than that of a solid because:
A. no relation exists between linear and volume expansion coefficients B. a liquid tends to evaporate C. a liquid expands too much when heated D. a liquid expands too little when heated E. the containing vessel also expands
A spaceship leaves Earth and maintains a constant force by means of a nuclear engine. As the speed of the spaceship increases, an observer on Earth finds that relative to her the magnitude of the spaceship's acceleration is
a. 0. b. decreasing. c. constant. d. increasing. e. proportional to the kinetic energy of the spaceship.
Light of wavelength 580 nm is incident on a slit of width 0.300 mm. An observing screen is placed 2.00 m from the slit. Find the width of the central maximum
A) 0.26 mm B) 1.9 mm C) 3.9 mm D) 4.3 mm E) 7.7 mm