An electron is confined in a one-dimensional box (an infinite ...

[olgavictoria]

An electron is confined in a one-dimensional box (an infinite well). Two adjacent allowed energies of the electron are 1.068  10-18 J and 1.352  10-18 J. What is the length of the box? (h = 6.626  10-34 J  s, mel = 9.11  10-31 kg)
 
  A) 0.93 nm B) 1.1 nm C) 2.3 nm D) 1.9 nm

Question 2

A certain heat engine extracts 1.30 kJ of heat from a hot temperature reservoir and discharges 0.70 kJ of heat to a cold temperature reservoir. What is the efficiency of this engine?
 
  A) 54 B) 86 C) 46 D) 13 E) 27

[asware1]

Answer to Question 1

D

Answer to Question 2

C

[olgavictoria]

Excellent

[jamesnevil303]

Gracias!