The Utrecht Psalter (10.15) was made during the ______period

Shock art artists are

A. Marcel Duchamp and Francis Picabia B. Paul McCarthy and Andres Serrano C. Morton Schamberg and Keith Arnatt D. Hugo Ball and Salvador Dali

The range of frequencies used by male and female voices is

a. 20 to 200 Hz. b. 200 to 3000 Hz. c. 5000 to 20,000 Hz. d. 20 to 200,000 Hz.