The relationship between the speed, the frequency and the wavelength of a wave is given by:
where
f is the frequency
v is the speed of the wave
is its wavelength
for the pressure wave in this problem,
and v=1400 m/s, therefore its frequency is
Answer:
Explanation:
reading of scale = reaction force of surface R
centripetal force = R - mg = m v² / R , m is mass , v is velocity and R is radius of the circular path .
R = mg + m v² / R
given ,
m v² / R = .80 mg
v² = .80 x g x R
= .8 x 9.8 x 9 = 70.56
v = 8.4 m /s
<span>The common designations are radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma-rays. Visible light falls in the rangeof the EM spectrum between infrared (IR) and ultraviolet (UV).</span>
The difference between the distance and the displacement is the speed is a scalar while displacement is a vector.
<h3>What is the distance an the displacement?</h3>
The distance is the difference between two points while the displacement is the difference between two points in a specified direction. Given that speed is a scalar and the displacement is a vector. It follows that we must take the displacement when obtaining the displacement.
Thus, the distance that is covered after one lap is the circumference of the circle = 2πr = 2 * 3.142 * 25 = 31 m Then for 2 laps = 62 m
The displacement is obtained when we take the direction into consideration. Owing to the fact that the runner returns to the starting point each time, the displacement is zero.
Learn more about displacement:brainly.com/question/11934397
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It keeps them back on the seat so they don't fly out the windshield.
