A heat engine having the maximum possible efficiency has an efficiency of 35.0% when operating between two heat reservoirs. If the temperature of the hot reservoir is 700 K, what is the temperature of the cold reservoir?
A) 200 K
B) 245 K
C) 350 K
D) 455 K
E) 600 K
D
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In a Voigt solid with an elastic modulus of 1 GPa, if a tensile stress of 1 MPa is applied, the total strain after a long time is equal to _________.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements is true of Nereid, Neptune's moon?
A) It is about 80 percent the size of Earth's moon. B) It generates a magnetic field of its own. C) It takes about an Earth year to circle Neptune once. D) It follows a large, angular orbit.
Conversion of Units: An oak tree was planted 22 years ago. How many seconds does this correspond to? (Do not take leap days into account.)
A. 6.9 × 108 B. 1.2 × 107 C. 2.9 × 107 D. 2.8 × 108
A convex lens is thinnest in its center; it refracts light to a focus, while a convex mirror reflects it to the focus instead
Indicate whether the statement is true or false