Problem: Printed circuit board:

The cloth or fiber material used, resin material, and the cloth to resin ratio determine the laminate's type designation (FR-4, CEM-1, G-10, etc.) and therefore the characteristics of the laminate produced. Important characteristics are the level to which the laminate is fire retardant, the dielectric constant (er), the loss factor (tδ), the tensile strength, the shear strength, the glass transition temperature (Tg), and the Z-axis expansion coefficient (how much the thickness changes with temperature).

The gain factor is one of the important what?
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A: unanswerable


Problem: Brain:

Neurotransmitters are chemicals that are released at synapses when an action potential activates them—neurotransmitters attach themselves to receptor molecules on the membrane of the synapse's target cell, and thereby alter the electrical or chemical properties of the receptor molecules. With few exceptions, each neuron in the brain releases the same chemical neurotransmitter, or combination of neurotransmitters, at all the synaptic connections it makes with other neurons; this rule is known as Dale's principle. Thus, a neuron can be characterized by the neurotransmitters that it releases. The great majority of psychoactive drugs exert their effects by altering specific neurotransmitter systems. This applies to drugs such as cannabinoids, nicotine, heroin, cocaine, alcohol, fluoxetine, chlorpromazine, and many others.

Chemicals called neurotransmitters are released at what part of the brain?
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A: synapses


Problem: Detroit:

The gasoline crises of 1973 and 1979 also affected Detroit and the U.S. auto industry. Buyers chose smaller, more fuel-efficient cars made by foreign makers as the price of gas rose. Efforts to revive the city were stymied by the struggles of the auto industry, as their sales and market share declined. Automakers laid off thousands of employees and closed plants in the city, further eroding the tax base. To counteract this, the city used eminent domain to build two large new auto assembly plants in the city.

What did Detroit use to build it's tax base?
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A: eminent domain


Problem: Capacitor:

Capacitors may have their connecting leads arranged in many configurations, for example axially or radially. "Axial" means that the leads are on a common axis, typically the axis of the capacitor's cylindrical body – the leads extend from opposite ends. Radial leads might more accurately be referred to as tandem; they are rarely actually aligned along radii of the body's circle, so the term is inexact, although universal. The leads (until bent) are usually in planes parallel to that of the flat body of the capacitor, and extend in the same direction; they are often parallel as manufactured.

How could radial leads be more correctly described?
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A:
as tandem