Is there evidence of life on Mars?
A) Yes, at least at the time the Allen Hills Meteorite was formed, since it has fossils.
B) Yes, but it is only in the form of microbes found by Viking landers.
C) Yes, just found as fossils in the sedimentary rocks examined by Spirit.
D) No, nothing suggesting life has ever been discovered.
E) We have confusing and uncertain results to date.
E
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A brass plate measures 30.0 cm by 40.0 cm. The coefficient of linear thermal expansion is 
If the temperature of the plate is increased by 10.0 K, then what is the increase in the area of the plate?
A. 0.350 cm2 B. 0.404 cm2 C. 0.456 cm2 D. 0.502 cm2 E. 0.555%
Listed following are the names and mirror diameters for six of the world’s greatest reflecting telescopes used to gather visible light. Rank the telescopes from left to right based on their light-collecting area from largest to smallest. For telescopes with more than one mirror, rank based on the combined light-collecting area of the mirrors.
The complete cycle of lunar phases takes 29.53 days, also known as the Moon's ____________________ period
Fill in the blank(s) with correct word
A person has a thermal conductivity of 0.18 W/m·K between his inner core and his skin with an effective shell thickness of 1.30 cm between his core and skin. If his inner core is at the normal 98.6°F, and his skin has a surface area of 1.62 m2, what will be his rate of loss of thermal energy due to conduction through his skin if his skin temperature is 28.3°C?
a. 150 W b. 158 W c. 316 W d. 195 W e. 254 W