Smaller worlds are more prone to atmospheric loss via impacts ...

[cabate]

Smaller worlds are more prone to atmospheric loss via impacts than large worlds because they
 
  A) have no plate tectonics
  B) have weaker gravities
  C) are more likely to be hit
  D) have less internal heat

Question 2

A metallic surface is illuminated with light of wavelength 400. nm. If the work function for this metal is 2.4 eV, calculate the kinetic energy of the ejected electrons, in electron-volts.
 
  What will be an ideal response?

[ririgirl15]

Answer to Question 1

B

Answer to Question 2

0.70 eV