What are two ways in which ultrasound technology produces images? A. By using sound in frequencies that reflect off body tissues
B. By detecting the frequencies of emitted sound waves
O C. By the absorption of sound waves in the body
U
D. By measuring the time it takes for reflected sound waves to be
detected
SUBMIT

Amachinist needs to remove a tight fitting pin of material a from a hole in a block made of material b. the machinist heats both the pin and the block to the same high temperature and removes the pin easily. what statement relates the coefficient of thermal expansion of material a to that of material b? a) the situation is not possible, heating block b will shrink the hole in the material as the material expands with increasing temperatureb) material b has the same coefficient of expansion as does material ac) material b has a negative coefficient of expansion and a has a positive coefficient of expansiond) material a has a greater coefficient of expansion than does material be) material b has a greate

Which type of current is produced by a wire breaking magnetic field lines and changing the polarity? a. alternating b. direct c. straight d. alternating and direct

Which feature indicates that mars resides in the inner region of the solar system