According to the Stefan-Boltzmann law, which of the following statements expresses the radiative energy emitted by one square metre of an object?
A. It is equal to a constant multiplied by its temperature, raised to the negative third power.
B. It is equal to a constant multiplied by its temperature, raised to the second power.
C. It is equal to a constant multiplied by its temperature, raised to the fourth power.
D. It is equal to a constant multiplied by its temperature, raised to the tenth power.
Answer: C
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Consider the equation Q = wdv. According to the equation, if Q (discharge) remains constant, but w and d decrease (as when a channel becomes more narrow and shallow), the velocity will
A) increase. B) decrease. C) remain constant.
Americans waste what percentage of their food?
A. 1-5% B. 10-20% C. 30-40% D. 60-75% E. 80-90%
Which of the following is NOT one of the four major religions for the European region?
a. Judaism b. Christianity c. Daoism d. Islam e. Animism
Mineral ballasting allows organic-rich fecal pellets to sink faster.
Answer the following statement true (T) or false (F)