Question

In the context of the Solar Nebula Disk Model, what is the significance of parameter E?

a. It represents the eccentricity of planetary orbits
b. It denotes the energy required for star formation
c. It is associated with the temperature distribution in the protostellar disk
d. It signifies the escape velocity of celestial bodies

Answer 1

Parameter E signifies the eccentricity of planetary orbits within the Solar Nebula Disk Model, illustrating the shape and dynamics of celestial bodies' paths in the solar system.

Step-by-step explanation:

In the context of the Solar Nebula Disk Model, the significance of parameter E is that it represents the eccentricity of planetary orbits. Eccentricity is a dimensionless parameter that characterizes the shape of an orbit. Smaller values of eccentricity indicate orbits that are more circular, with a value of 0 representing a perfect circle, whereas larger values suggest more elongated orbits. For example, Halley's Comet has an eccentricity of 0.967, indicating a highly elongated orbit, which supports the observation of cometary orbits that are not circular. By understanding eccentricity, we can learn about the dynamics of celestial bodies and their interactions in the solar system.