Problem: States of Germany:

A new delimitation of the federal territory has been discussed since the Federal Republic was founded in 1949 and even before. Committees and expert commissions advocated a reduction of the number of states; academics (Rutz, Miegel, Ottnad etc.) and politicians (Döring, Apel, and others) made proposals –  some of them far-reaching –  for redrawing boundaries but hardly anything came of these public discussions. Territorial reform is sometimes propagated by the richer states as a means to avoid or reduce fiscal transfers.

Which public discussions had far-reaching appeal?
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A: unanswerable


Problem: Capacitor:

Capacitors, especially ceramic capacitors, and older designs such as paper capacitors, can absorb sound waves resulting in a microphonic effect. Vibration moves the plates, causing the capacitance to vary, in turn inducing AC current. Some dielectrics also generate piezoelectricity. The resulting interference is especially problematic in audio applications, potentially causing feedback or unintended recording. In the reverse microphonic effect, the varying electric field between the capacitor plates exerts a physical force, moving them as a speaker. This can generate audible sound, but drains energy and stresses the dielectric and the electrolyte, if any.

 What sort of current is induced when the capacitance of a capacitor is unaltered?
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A: unanswerable


Problem: Houston:

The Houston area has over 150 active faults (estimated to be 300 active faults) with an aggregate length of up to 310 miles (500 km), including the Long Point–Eureka Heights fault system which runs through the center of the city. There have been no significant historically recorded earthquakes in Houston, but researchers do not discount the possibility of such quakes having occurred in the deeper past, nor occurring in the future. Land in some areas southeast of Houston is sinking because water has been pumped out of the ground for many years. It may be associated with slip along the faults; however, the slippage is slow and not considered an earthquake, where stationary faults must slip suddenly enough to create seismic waves. These faults also tend to move at a smooth rate in what is termed "fault creep", which further reduces the risk of an earthquake.

 What is a fast smooth rate of movement of faults called?
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A: unanswerable


Problem: Clothing:

A resin used for making non-wrinkle shirts releases formaldehyde, which could cause contact dermatitis for some people; no disclosure requirements exist, and in 2008 the U.S. Government Accountability Office tested formaldehyde in clothing and found that generally the highest levels were in non-wrinkle shirts and pants. In 1999, a study of the effect of washing on the formaldehyde levels found that after 6 months after washing, 7 of 27 shirts had levels in excess of 75 ppm, which is a safe limit for direct skin exposure.

Seventy-five ppm of formaldehyde is not a safe limit for what?
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A:
unanswerable