Problem II (30 points+ 6 bonus points): Consider a doped p-type semiconductor at a temperature T, which is close to room temperature (300 K). Its bandgap Eg is 60kBT. The ratio of the acceptor concentration (NA) and the intrinsic carrier concentration (ni) NA/ni is e25. We assume i) all the acceptors are ionized; ii) the effective masses for electrons and holes are the same and Nc is known; and iii) the energy at the top of the valence band is set as zero.   calculate Ei calculate EF find ni in terms of Nc (optional, 6 bonus points) find the electron and hole concentration in terms of Nc. Note: Here kBT as used as the energy unit. Therefore, you do not need to calculate any actual values for Nc,  kBT, etc.      

Donald Trump made headlines for saying he wouldn’t mind if journalists were shot.

  i. Explain the difference between mandatory and discretionary spending   ii. Provide two examples of each

What is the difference between the national debt and the federal deficit?  

 Medical management for a patient with Sickle Cell Disease (Anemia) includes these 4 main treatments (therapies): 1. [therapy1]  2. [therapy2]  3. [therapy3]  4. [therapy4]    

Kamala Harris appears on “Saturday Night Live” in the opening skit, which may have violated the FCC’s rules about equal time. 

What example does Kelly & Roedder give, as an example of how someone can work to counteract unknown implicit biases? 

Rather than affirmative action, Steele thinks social policies need to be committed to two goals.  One involves the eradication of racial ethnic, or gender discrimination.  Which one is the other? 

What does Shelby Steele say about affirmative action, after its 20 years of implementation?

In their essay on implicit bias, Kelly and Roedder have a twofold aim for their argument.  The first is to look into the empirical work on implicit bias.  What is the second aim?