Which statement about Saturn's rings is not true?
A) The large gap known as the Cassini Division is shaped by an orbital resonance with the moon Mimas, which orbits well outside the rings.
B) Some features of the rings are shaped by small moons that actually orbit within the ring system.
C) The rings must look much the same today as they did shortly after Saturn formed.
D) The rings are so thin that they essentially disappear from view when seen edge-on.
C
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If the kinetic energy of an object increases, then
A. the speed must increase as well. B. the total energy must increase. C. there can only be one force on the object. D. the potential energy must decrease.
Plasmas are controlled and manipulated using an approach called ______________ confinement
Fill in the blank(s) with correct word
Which of the following ranges corresponds to the shortest wavelengths?
a. infrasonic c. ultrasonic b. audible d. All have the same wavelengths.
The total energy radiated by a blackbody depends on:
A) the fourth power of its temperature. B) the square of its temperature. C) the square root of its temperature. D) the cube root of its temperature. E) the cube of its temperature.