An astronaut is traveling at a high rate of speed from the Earth to a distant star system. Observers here on Earth note the relativistic effect that the astronaut's clocks run slow. What relativistic effect, if any, does the astronaut observe?
a. Her pulse rate slows.
b. The distance from the Earth to the star system has decreased. c. Her clocks run faster.
d. There is no relativistic effect to be observed by the astronaut since she is the one doing the moving.
B
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How does Earth's varying distance from the Sun affect our seasons?
A) It doesn't—Earth's orbital distance plays no significant role in the seasons.
B) It causes the seasons to be more extreme than they would be if the Earth's distance from the Sun were always the same.
C) It makes summer warmer in the Northern Hemisphere than in the Southern Hemisphere.
D) It is responsible for the fact that the seasons are opposite in the Northern and Southern hemispheres.
Determine the viscosity and the kinematic viscosity of water at 300 K and 350 K.
What will be an ideal response?
Which of the following types of galaxies are most spherical in shape?
A) spirals B) ellipticals C) lenticulars D) irregulars
The elapsed time between two successive crossings of the same meridian by a star other than the Sun is known as the ______________ day
Fill in the blank(s) with correct word