Answer:
A. Using
Fl= ( v+vl/v+vz)fz
= (340+19/340+31) x 2020
= 1954.7Hz
Then to find the frequency of sound when reflected from the truck such that the driver becomes the listener
we use
F"= ( v+vz/v+vl) fz
= 340+31/340+19 x 2020
2087.5Hz
B to find the wavelength of sound we use
Wavelength= V+vl/ F"
= 340+31/2087.5= 0.18m
Hotter sand from increasing temps results in decreased hatching rates or nest failure. High sand temps also affect hatchlings by altering natural sex ratios, with hotter temps producing more female hatchlings. <span>Sea turtles use ocean currents to travel and find prey. Warming ocean temps influence migratory species by altering currents and impacting the distribution and abundance of prey species.</span>
The answer to that probably would be C excuse me if I am wrong.
F = G*((m sub 1*m sub 2)/r^2)