Once an object strikes Earth's surface, it is called a "meteor"
a. True
b. False
Indicate whether the statement is true or false
False
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Compared to today, in the future, the Sun's habitable zone will be
A) wider and closer to the Sun B) narrower and closer to the Sun C) narrower and farther from the Sun D) wider and farther from the Sun
Instructions: On occasion, the notation 
will be a shorthand notation for 
.
A vector,
, when added to the vector 
yields a resultant vector which is in the positive y direction and has a magnitude equal to that of 
. What is the magnitude of ?
A. 3.2
B. 6.3
C. 9.5
D. 18
E. 5
When light enters a denser medium, the speed of the light ______________
Fill in the blank(s) with correct word
The ionization energy of the hydrogen atom is 13.6 eV. What is the wavelength of a photon having this much energy? (h = 6.63 × 10^-34 J×s, c = 3.00 × 10^8 m/s, 1 eV = 1.6 × 10^-19 J, and 1 nm = 10-9 m)
a. 91.4 nm c. 136 nm b. 360 nm d. 273 nm