Physics
A stone floor feels cold to the bare feet but a carpet on the same floor feels warm. This is because

The floor and carpet are at different temperatures
The stone conveys the heat away from the feet more rapidly than the carpet
The human body maintains a constant temperature
The carpet is a better conductor of heat than the stone

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Physics
Analog synthesis refers to a technology based on

Interfacing synthesizer equipment.
Representing data in terms of measurable physical quantities.
Representing physical quantities as numbers.
Placing brief digital recordings of live sounds under the control of a synthesizer keyboard.

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Physics
Which is evidence that supports the dynamo theory?

Granite and basalt conduct electricity
Convection occurs in Earth's inner core
Earth's core contains a large amount of iron
Earth's outer core contains liquid that conducts electricity

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