A simple thermocouple circuit, which is composed of type-J thermocouples, is used to measure the temperature of a gas. The open circuit voltage, V0, oscillates in a sinusoidal fashion with a mean of 4.997 mV, an amplitude of 0.541 mV, and a frequency of 2.1 Hz. The measurement system has the time constant τ = 1.7 s. The reference junction temperature is measured with a platinum RTD (a = 0.003927 °C^-1) where R = 1.0275 W and R0 = 1.0000 W with T0 = 25 °C. Calculate the following quantities:

a. The mean gas temperature.
b. The amplitude of the fluctuating gas temperature.

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explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."