Why do astronomers think Miranda has such an unusual surface?
A) It underwent an episode of tidal heating in the past.
B) It was squashed by a giant impact.
C) It formed from the remains of a giant impact relatively recently.
D) Its surface is covered with a powdery dust from micrometeorite impacts.
E) Its low temperature affects the colors of its surface ice.
A
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Two identical particles, each with a mass of 2.0 mg and a charge of 25 nC, are released simultaneously from rest when the two are 4.0 cm apart. What is the speed of either particle at the instant when the two are separated by 10 cm?
a. 7.3 m/s b. 9.8 m/s c. 9.2 m/s d. 6.5 m/s e. 4.6 m/s
Heat is:
A. energy transferred by virtue of a temperature difference B. energy transferred by macroscopic work C. energy content of an object D. a temperature difference E. a property objects have by virtue of their temperatures
Two waves are described by y1 = 6cos(180t) and y2 = 6cos(186t) (both in meters). With what angular frequency does the maximum amplitude of the resultant wave vary with time?
a. 366 rad/s b. 6 rad/s c. 3 rad/s d. 92 rad/s e. 180 rad/s
Red light with a wavelength of 650 nm travels from air into a liquid with an index of 1.33. What are the frequency and wavelength of the light in the liquid? (c = 3.0 × 108 m/s)
What will be an ideal response?