Answer:
Remains the same
Explanation:
The speed of waves of higher and lower frequency both will be same. 
the speed of sound in a medium is constant  and independent of it's frequency. Moreover, when the frequency changes wavelength changes accordingly, such that their product remains constant. 
we know that 
υ×λ = constant = velocity 
υ= frequency 
λ= wavelength. 
 
        
             
        
        
        
This is an example of inertia - the body keeps it's energy because there is no force applied to it. When we try to stop it's motion, it resists. A man is not rigidly attached to the bus, so he keeps moving forward, at least until he hits the front window from inside. Answer is D.
        
             
        
        
        
Answer:
Explanation:
a. The amplitude is the measure of the height of the wave from the midline to the top of the wave or the midline to the bottom of the wave (called crests). The midline then divides the whole height in half. Thus, the amplitude of this wave is 9.0 cm.
b. Wavelength is measured from the highest point of one wave to the highest point of the next wave (or from the lowest point of one wave to the lowest point of the next wave, since they are the same). The wavelength of this wave then is 20.0 cm. or 
c. The period, or T, of a wave is found in the equation
 were f is the frequency of the wave. We were given the frequency, so we plug that in and solve for T:
 were f is the frequency of the wave. We were given the frequency, so we plug that in and solve for T:
 so
 so
 and
 and
T = .0200 seconds to the correct number of sig fig's (50.0 has 3 sig fig's in it)
d. The speed of the wave is found in the equation
 and since we already have the frequency and we solved for the wavelength already, filling in:
 and since we already have the frequency and we solved for the wavelength already, filling in:
 and
 and
v = 50.0(20.0) so
v = 1.00 × 10³ m/s 
And there you go!
 
        
             
        
        
        
Centripetal force is given by F= mv²/r.
Given: m = 0.5 kg, v = 3 m/s, r = 0.5 m
Putting values,
F= mv²/r = 0.5× 3²/0.5 = 9 N
 
        
                    
             
        
        
        
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