Which of the following is not directly involved in the second law of thermodynamics?
a. Spontaneous heat flow
b. Converting all heat input into work
c. Conservation of energy
d. Entropy
c
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Which type of focus is most common for larger telescopes?
a. Cassegrain focus b. Galilean focus c. Newtonian focus d. Copernican focus e. Schmidt-Cassegrain focus
A commercial jet flies above a region of the earth where the earth’s magnetic field points nearly (a) straight upward, which part of the airplane becomes negatively charged?
A. Its nose B. Its tail C. Its top D. Its bottom E. Its left wing F. Its right wing T. (No part becomes charged.)
In the context of the Doppler effect, which of the following is a difference between a blueshift and a redshift?
A) Unlike a redshift, a blueshift is caused by a velocity of recession. B) Unlike a blueshift, a redshift is based on the Hubble's law. C) Unlike a redshift, a blueshift is a shift toward shorter wavelengths. D) Unlike a blueshift, a redshift is based on a light source moving closer to an object.
Constant Acceleration Kinematics: A car starts from rest and accelerates at a steady 6.00 m/s2. How far does it travel in the first 3.00 s?
A. 9.00 m B. 18.0 m C. 27.0 m D. 36.0 m E. 54.0 m