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In this picture, what wave parameter is indicated by the question mark? Screenshot (85).png

What change typically occurs to the propagation velocity when the density is increased?

Which of these mediums would have a propagation velocity closest to that of “soft tissue”?

Which factor has more effect on speed?

Which statement is true regarding electromagnetic waves (choose all that apply).

0.0043 MHz = ?? kHz

What is the period? Screenshot (83).png

Given the equation y = 9x, an increase in x by a factor of 4 implies what change to the variable y?

Which of these parameters best correlates with an increase in Bulk modulus?

A 28 year old mother with pregnancy induced hypertension has given birth to a 1400 g infant who is small for gestational age at 35 weeks of pregnancy. On examination the infant has palmar pallor, a pink tongue, temperature of 350 C , a respiratory rate of 68 breaths per minute and good air entry bilateral. The rest of the examination was unremarkable. What is the most likely explanation for this infant’s respiratory findings?