Which best explains why making a pancake from batter is an example of a chemical change?
2 answers:
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The wavelength of the wave is 0.055 m
Explanation:
The relationship between speed, frequency and wavelength of a wave is given by the wave equation:
where
v is the speed
f is the frequency
is the wavelength
For the sound wave in this problem we have
v = 340 m/s is the speed
f = 6,191 Hz is the frequency
Solving for , we find the wavelength:
Learn more about waves and wavelength:
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Answer:
The height of the image will be "1.16 mm".
Explanation:
The given values are:
Object distance, u = 25 cm
Focal distance, f = 1.8 cm
On applying the lens formula, we get
⇒
On putting estimate values, we get
⇒
⇒
⇒
As a result, the image would be established mostly on right side and would be true even though v is positive.
By magnification,
and
⇒
⇒
⇒