If Earth's mass somehow decreased with no change in its radius, your weight would
A) decrease also.
B) increase.
C) remain the same.
Answer: A
Physics & Space Science
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Sound refraction can occur when the speed of sound
A) remains constant. B) changes. C) ranges below supersonic. D) none of the above
Physics & Space Science
Copper melts at 1085°C and platinum melts at 1769°C. Which material should have the smaller coefficient of thermal expansion? _____________
Fill in the blank(s) with the appropriate word(s).
Physics & Space Science
Most galaxies are isolated in space
Indicate whether the statement is true or false
Physics & Space Science
Water at 20°C is transported in a 10-cm-diameter cast iron horizontal pipe at a flow rate of 0.02 m^3/s. The pressure drop over 100 m of the pipe is nearest:
(A) 97 kPa (B) 84 kPa (C) 62 kPa (D) 51 kPa
Physics & Space Science