Explain why a red sports car appears to be red to the human eye.
What will be an ideal response?
It reflects the light in the red portion of the spectrum and absorbs the light of the other wavelengths.
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A steam power plant, which can be modeled as a heat engine, is to reject heat to cooling water at 295 K. Plot the maximum possible thermal efficiency of the power plant for heat input temperatures ranging between 500 K and 800 K.
Given: TC = 295 K
Which of the following is characterized by smooth round bodies that are not segmented?
a. Protozoa c. Nematodes b. Fungi d. Earthworms
The chip brush removes chips from the:
A) Workpiece B) Band wheel C) Worktable D) Band guide
Which of the following types of DC motors are typically controlled by a DC drive?
A. permanent magnet B. series C. shunt D. compound E. both a and c