Giancoli Ch. 18 – p. 515-6, Problems #1-11 key
Giancoli Ch. 18 – p. 516, Problems #12-16, 20-22 key
Giancoli Ch. 18 – p. 516-7, Problems #26-39
Giancoli Ch. 19 – p. 547, Problems #1-18 key
Giancoli Ch. 19 – p. 548-9, Problems #23-31 key
Giancoli Ch. 19 – p. 549-550, Problems #35-48 key