Answer:
the acceleration of the airplane is 5.06 x 10⁻³ m/s²
Explanation:
Given;
initial velocity of the airplane. u = 34.5 m/s
distance traveled by the airplane, s = 46,100 m
final velocity of the airplane, v = 40.7 m/s
The acceleration of the airplane is calculated from the following kinematic equation;
v² = u² + 2as

Therefore, the acceleration of the airplane is 5.06 x 10⁻³ m/s²
 
        
             
        
        
        
It can be a) 12Hz.................
        
             
        
        
        
Answer:
a) 
b) 
c) 
d) 
Explanation:
<u>Given equation of pressure variation:</u>
![\Delta P= (1.78\ Pa)\ sin\ [(0.888\ m^{-1})x-(500\ s^{-1})t]](https://tex.z-dn.net/?f=%5CDelta%20P%3D%20%281.78%5C%20Pa%29%5C%20sin%5C%20%5B%280.888%5C%20m%5E%7B-1%7D%29x-%28500%5C%20s%5E%7B-1%7D%29t%5D)
We have the standard equation of periodic oscillations:

<em>By comparing, we deduce:</em>
(a)
amplitude:

(b)
angular frequency:


∴Frequency of oscillations:


(c)
wavelength is given by:



(d)
Speed of the wave is gives by:



 
        
             
        
        
        
False
Energy in the form of motion is kinetic energy
Stored energy is called potential energy
 
        
             
        
        
        
Answer:
Explanation:
Average speed= Total distance/ Total time
                        
Initial reading= 2200
final reading= 3800
total distance= Final reading -initial reading  = 3800-2200 = 1600 km
total time= 20 hrs
Average speed= 1600/20
                        = 80 km/hr
CONVERTING km/hr TO m/s  
To convert km/hr to m/s just multiply
Recall that,
1000m = 1 km
60 secs = 1 min
60 mins = 1 hr
 ( 80 × 1000 ) meters / ( 60×60 ) secs
80000m / 3600s
= 22.22m/s