What are comets made of?
A) silicates and rocky dust
B) metallic dust particles
C) dark colored complex hydrocarbons
D) methane, ammonia, and water ice
E) All of the above.
E
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In the context of a redshift and a blueshift, "red" and "blue" refer to the actual color of the light
Indicate whether the statement is true or false
A 2.0 kg mass is attached to the end of a horizontal spring (k = 50. N/m) and set into simple harmonic motion with an amplitude of 10. cm. What is the total mechanical energy of this system?
A) 0.02 J B) 25 J C) 0.25 J D) 1.00 J E) 2.5 J
Which of the following is a method of heat transport that involves the movement of warm molecules of gas or liquid from one region to another?
a. Convection b. Conduction c. Radiation
The point along a planet's orbit where it is closest to the Sun is called the orbit's
A) period. B) perihelion. C) eccentricity. D) semi-major axis. E) aphelion.