All stars ultimately leave behind a white dwarf and an expanding planetary nebula after they exhaust their nuclear fuel.
Answer the following statement true (T) or false (F)
False
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Projectile Motion: An athlete competing in the long jump leaves the ground with a speed of 9.14 m/s at an angle of 35° above the horizontal. How long does the athlete stay in the air, assuming no significant air resistance?
A. 0.50 s B. 0.88 s C. 1.1 s D. 2.5 s E. 0.54 s
Our solar system is located about 27,000 light-years from the galactic center. How far does our solar system travel in one orbit?
A) 85,000 light-years B) 54,000 light-years C) 100,000 light-years D) 170,000 light-years
The open universe would be geometrically flat
Indicate whether the statement is true or false
A nichrome wire and an aluminum wire, each with the same initial resistance, have the same change in resistance when heated separately. (rAl = 2.82 × 10^-8 W × m; aAl = 3.9 × 10^-3 / °C; rnichrome = 1.50 × 10^-6 W × m; anichrome = 0.40 × 10^-3 / °C.) The ratio of the temperature change of the nichrome wire to the temperature change of the aluminum wire is
a. 0.019. b. 0.10. c. 0.18. d. 9.8. e. 53.