Which of the following mathematical formulas best describes the relationship between the original age of
the child (A) the age of the child when the message
was received (R) and their distance from the receiver in
light years (D)?
O A = RD
A = R/D
O A = R+D
0 A-D-R
A+R-D

Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87