A I believe if not I’m sorry
Answer:
crops
Explanation:
dairy are milk products and those aren’t
live stock is domesticated farm animals raised to produce resources
non-perishables are canned food and dried food. they can last a long time. they don’t need to be refrigerated or
Answer:
Force exerted by the air on the propellers = 46000 - 9200
= 36800 N
Hope this helps!
The type of waves used by bats are sound waves. Most of the species use their larynx to produce ultrasound waves in the frequency range of 20 to 200 kilohertz.
These sound waves are echoed, reflected, by surroundings, in this case food or prey. These reflections are received by the specialized receptor cells in the ears of bats. The reflections are analyzed by the brain to make an image.
Fun fact: The brain cells of bats are also specialized to better analyze the frequency of ultrasound used by the bat.
Wavelength is the distance between 2 adjacent points in a wave
we can use the following equation to find the wavelength of a sound wave
wavelength = speed / frequency
frequency is the number of waves passing a point in 1 second
substituting the values in the equation
wavelength = 343 m/s / 686 Hz
wavelength = 0.5 m
wavelength of the wave is 0.5 m
