Cold is the presence of low temperature, especially in the atmosphere. In common usage, cold is often a subjective perception. A lower bound to temperature is absolute zero, defined as 0.00 K on the Kelvin scale, an absolute thermodynamic temperature scale. This corresponds to −273.15 °C on the Celsius scale, −459.67 °F on the Fahrenheit scale, and 0.00 °R on the Rankine scale.

Since temperature relates to the thermal energy held by an object or a sample of matter, which is the kinetic energy of the random motion of the particle constituents of matter, an object will have less thermal energy when it is colder and more when it is hotter. If it were possible to cool a system to absolute zero, all motion of the particles in a sample of matter would cease and they would be at complete rest in this classical sense. The object would be described as having zero thermal energy. Microscopically in the description of quantum mechanics, however, matter still has zero-point energy even at absolute zero, because of the uncertainty principle.

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#ayessa

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2 years ago

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Which statement about the number of 25- to 45-year-olds living alone is correct?

mr Goodwill [35]

Answer:

The correct answer is - It has remained relatively constant since the 1990s.

Explanation:

According to the study and research of "Twenty-Five-year Trends in Living Alone in the U.S., 1990 & 2015" the number of data is denoted and plot a graph.

The graph is attached in which all the living alone from 1990 to 2015 including the number of people of age group between 25 to 45 years. It is given that the numbers of particular age groups are relatively constant over the 25 years time period.

3 0

3 years ago