Physics
A real gas can act as an ideal gas in

High pressure and high temperature
Low pressure and low temperature
High pressure and low temperature
Low pressure and high temperature

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Physics
Analog synthesis refers to a technology based on

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

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Physics
The sensation of weightlessness in a spacecraft in an orbit is due to the

Presence of gravity outside but not inside the spacecraft
Fact that spacecraft in the orbit has no energy
Absence of gravity outside
Acceleration in the orbit which is equal to the acceleration due to gravity outside

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