The geosphere interacts with the hydrosphere when water causes rock to erode. The atmosphere provides the geosphere with heat and energy for erosion, and the geosphere reflects the sun's energy back into the atmosphere.
Answer:
<h2>0.66m</h2>
Explanation:
<em>The question is not complete, here is the complete question, also see attached the image.</em>
<em>"A bicycle gear wheel is a disc with 50 ‘teeth’ equally spaced around its edge, as shown. The gear wheel is rotated 10 times each second. A springy strip of metal is vibrated by the rotating ‘teeth’. The metal strip produces a sound of frequency that is equal to the frequency of vibration of the strip. The speed of sound in air is 330ms–1. What is the wavelength of the emitted sound?"</em>
given data
number of teeth= 50
we are told that the gear is rotated 10 times in 1 sec,
hence the frequency of the rotation past the strip is
=50*10
=500Hz
speed of sound= 330m/s
we know that
-----------1
where Vw is the speed of sound,
f is its frequency, and
λ is its wavelength.
λ=Vw/f
λ=330/500
λ=0.66m
The answer is B because I took the test and had the question
My answer has to be 20 characters but it’s a) air
Starting from rest, the plane travels a distance
<em>x</em> = 1/2 <em>at</em>²
with acceleration <em>a</em> after time <em>t</em>. In this instance, it travels
<em>x</em> = 1/2 (3.20 m/s²) (32.8 s)²
<em>x</em> ≈ 1720 m