How did early man make ice?
What will be an ideal response?
The ice was produced in shallow clay plates, about the size of a saucer. The water in these clay plates wept through the clay. This water dampened the small straw mats holding the clay plates in racks a few feet above the ground. The straw aided with evaporative cooling of the water. Under the right conditions a thin film of ice would form overnight on each clay plate.
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The material condition modifying elements are ____.
A. MMC B. EECS C. RFS D. JKS E. both a and c
The subsequent problems deal with the circuit below where:Vs=2 sin (100 t) V, R1=1k?, R2=1k?, and C=1µfAssume the circuit is operating in steady state (transients already gone).
What is the rectangular form of the equivalent impedance (in ?) of the R1?C branch?
A. 1000 ? 100 j B. 1000 + 10000 j C. 1000 D. 1000 + 100 j E. 1000 ? 10000 j
87 + 2,834 + 561 =
A) 3,482 B) 3,572 C) 3,472 D) 3,582
Multiply the following fractions and reduce to lowest terms: 3 1/8 x 4 1/2 =
What will be an ideal response?