When a collision is completely inelastic, then:
a. all the kinetic energy is conserved. c. the participants stick together.
b. all the kinetic energy is gone.
d. the total momentum is zero.
C
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Which kinds of waves can be polarized?
a. longitudinal waves b. dispersed waves c. refracted waves d. sound waves in air e. transverse waves
The habitable zones for stars may be considerably larger if they have planetary systems containing
A) super-Earths with thick hydrogen atmospheres B) Earth-sized planets with thick carbon dioxide atmospheres C) super-Earths with thin hydrogen atmospheres D) Earth-sized planets with thick methane atmospheres
If the absolute value of the magnification is smaller than one, then the image is
A) larger than the object. B) the same size as the object. C) smaller than the object.
According to the well-known equation E = mc2,
A) mass and energy travel at the speed of light squared. B) energy is actually mass traveling at the speed of light squared. C) mass and energy travel at twice the speed of light. D) mass and energy are related. E) none of the above