Which moon of the Jovian planets has a thick, hazy atmosphere?
a. Io
b. Triton
c. Europa
d. Titan
d
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The filament in a light bulb has a diameter of 0.050 mm and an emissivity of 1.0. The temperature of the filament is 3000°C. What should be the length of the filament so it will radiate 60 W of power?
The Stefan-Boltzmann constant is 5.670 × 10-8 W/m2 · K4. A) 11 cm B) 9.4 cm C) 8.6 cm D) 7.2 cm E) 5.9 cm
Why does a satellite in elliptical orbit gain speed as it moves closer to the planet? When is its kinetic energy greatest? Least? Where is its potential energy greatest? The least?
What will be an ideal response?
You are building a compound microscope with an objective lens of focal length 1.1 cm and an eyepiece lens of focal length 5.0 cm. You mount the lenses 18 cm apart. What is the approximate magnification of your microscope?
a. 3 c. 80 b. 7 d. 130
The Huygens probe is an example of which kind of robotic spacecraft?
A) orbiter B) sample return C) lander D) flyby