A recent sunspot maximum occurred in 2001 . What is the year of the sunspot maximum that immediately follows the 2001 maximum if the solar cycle continues?
a. 2006 or 2007
b. 2012
c. 2018
d. 2023
e. the last cycle started a Maunder minimum and the next maximum cannot be predicted.
B
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The focal length of a lens is 5 m. What is the refractive power of this lens in diopters?
A) 0.1 diopters B) 0.2 diopters C) 0.3 diopters D) 0.4 diopters E) 0.5 diopters
Two resistors having resistances of 5.0 ? and 9.0 ? are connected in parallel. A 4.0-? resistor is then connected in series with the parallel combination. An ideal 6.0-V battery is then connected across the series-parallel combination
What is the current through the 9.0-? resistor? A) 0.35 A B) 0.53 A C) 0.83 A D) 0.30 A E) 0.67 A
Which of the following elements will most likely be shiny and malleable?
A) rhodium (Rh) B) hydrogen (H) C) helenium (Se) D) iodine (I) E) silicon (Si)
The second is a metric unit of measure
Indicate whether the statement is true or false