What is unique about schlieren images as compared to shadowgraphs

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

The pressure proportional to the area a- inversely b- directly c- increase d-decrease