What would be the gravitational force that a planet with the same density as Earth and having twice Earth's radius exerts on a 59.1-kg astronaut?
A) 580 N
B) 290 N
C) 1160 N
D) 2320 N
E) 1200 N
C
Physics & Space Science
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If the surface area of a sphere is increased by 16%, by what percentage has the radius been changed?
A. 16% B. 8.1% C. 7.7% D. 12%
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Astronomers have defined a(n) _______________ around a star as a region within which planets that orbit there have temperatures permitting the existence of liquid water
Fill in the blank(s) with correct word
Physics & Space Science
Water flows through a pipe having a varying width. More water flows per second through the wide section than through the narrow section because there is more room for it to flow
A) True B) False
Physics & Space Science
Spectral Series: To which of the following values of n does the shortest wavelength in the Balmer series correspond?
A. 3 B. 5 C. 7 D. 1 E. ? (very large)
Physics & Space Science