A metallic object holds a charge of ?4.8 × 10^?6 C. What total number of electrons does this represent? (e = 1.6 × 10^?19 C is the magnitude of the electronic charge.)
a. 3.0E+13
b. 7.8E+13
c. 1.9E+13
d. 7.8E+14
e. 1.6E+14
c
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By what factor is the total pressure greater at a depth of 650 m in water than at the surface where the pressure is one atmosphere? (water density = 1.0 × 10^3 kg/m3, 1 atmosphere pressure = 1.01 × 10^5 N/m2, and g = 9.8 m/s2)
a. 100 c. 64 b. 83 d. 19
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Fill in the blank(s) with correct word
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a. True b. False Indicate whether the statement is true or false