The resistance of a 100-cm wire of cross sectional area 2 × 10-6 m2 is 400 ?. What is the resistivity of the material of this wire?
A) 0.8 × 10-4 ?m
B) 8 × 10-4 ?m
C) 0.8 × 10-5 ?m
D) 0.8 × 10-6 ?m
E) 8 × 10-6 ?m
B
Physics & Space Science
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4-Fluoroheptane and 5-fluoroheptane are
a. isomers. b. the same compound. c. neither isomers nor the same compound.
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In a one-dimensional elastic collision of two identical masses, the masses always exchange velocities
Indicate whether the statement is true or false
Physics & Space Science
Two speakers in a stereo emit identical pure tones. As you move around in front of the speakers, you hear the sound alternating between loud and zero. This occurs because of __________
Fill in the blank(s) with correct word
Physics & Space Science
An atom has subshells 
in the ground state. What is its atomic number?
A. 10 B. 18 C. 20 D. 30 E. More information is needed.
Physics & Space Science