There are daily variations in the barometric pressure, which occur because of tidal effects
Indicate whether the statement is true or false
TRUE
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A television advertisement claiming that a product is light-years ahead of its time does not make sense because
A) it doesn't specify the number of light-years. B) it uses "light-years" to talk about time, but a light-year is a unit of distance. C) a light-year is an astronomically large unit, so a product could not possibly be so advanced. D) light-years can only be used to talk about light.
60. mi/h is approximately
A) 20. m/s. B) 120. m/s. C) 30. m/s. D) 60. m/s. E) 30. km/h.
Silver has a Fermi level (energy) of 5.5 eV. At 0 K, at what speed would the electrons be moving if they had kinetic energy equal to the Fermi energy?
(This speed is known as the Fermi speed.) (mel = 9.11 × 10-31 kg, 1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J • s) A) 1100 km/s B) 1400 km/s C) 2.2 km/s D) 1.0 km/s E) 3.5 km/s
A 120-V rms voltage at 2000 Hz is applied to a 6.0-mH inductor, a 2.0-?F capacitor and a 200-? resistor. What is the rms value of the current in this circuit?
A) 1.5 A B) 0.48 A C) 2.5 A D) 3.5 A E) 0.59 A