About how many electrons are in 0.3 gram of water (H2O)?
a. 1023
c. 1025
b. 1021
d. 1019
A
Physics & Space Science
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What is the maximum radiation pressure exerted by sunlight in space (S = 1350 W/m2) on a highly polished silver surface?
a. 1.4 × 10^?2 Pa b. 0.12 Pa c. 9.0 × 10^?6 Pa d. 4.5 × 10^?5 Pa e. 2.3 × 10^?6 Pa
Physics & Space Science
Components: The magnitude of a vector an only zero if all of its components are zero.
A. True B. False
Physics & Space Science
In Part A, you found that Planet Z should not have seasons. What single change to Planet Z's characteristics would cause it to have seasons?
a. a larger axis tilt b. a smaller size= c. a faster rotation rate d. a greater distance from its star
Physics & Space Science
Our Sun is a star of spectral type ________
A) M B) F C) S D) G
Physics & Space Science