Physics · THERMODYNAMICS

For an ideal gas obeying Mayer's relation \( C_p - C_v = R \), if the ratio of specific heats is \( \gamma = \frac{C_p}{C_v} = 1.40 \), what is the value of \( C_v \) in terms of the universal gas constant \( R \)?

1. A
   \( 1.5 R \)
2. B
   \( 3.5 R \)
3. C
   \( 2.5 R \)
4. D
   \( 4.0 R \)