Process of Science: What would you say to a friend who thinks that the general theory of relativity is a beautiful example of abstract thinking by humankind that explains extreme phenomena in astrophysics but has no application to everyday life?
What will be an ideal response?
The map application in your smartphone would not work nearly as accurately as it does if general relativity was not used to calculate the orbits of the GPS satellites around the Earth.
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The "Grand Tour" of all four jovians was conducted by:
A) Galileo. B) Cassini. C) Pioneer 11. D) Voyager 1 and 2 both. E) Voyager 2.
Which Mars mission searched for life in the Martian soil in the 1970's?
A) Pathfinder B) Phoenix C) Viking D) Mariner
Two light bulbs, a thick-filament one and a thin-filament one, are connected in series to a battery. The voltage is greater across the lamp with the
A) thick filament. B) thin filament. C) same for both
A 12.0-kg mass is placed on a 25.0° incline and friction keeps it from sliding. The coefficient of static friction in this case is 0.580, and the coefficient of sliding friction is 0.520 . The mass is given a shove causing it to slide down the incline. What is the frictional force while the mass is sliding?
a. 55.4 N c. 49.7 N b. 107 N d. 61.2 N