Answer:
Water leaves the sprinkler at a speed of 2.322 m/sec
Explanation:
We have given internal diameter of the garden 
Speed of water in the hose is 
Number of holes n = 22
Diameter of each holes 
According to continuity equation 



So water leaves the sprinkler at a speed of 2.322 m/sec
 
        
             
        
        
        
Answer:
1)The position change of almost any manually operated room light switch.
2) Sunlight striking a point on the ground on a partly cloudy and windy day
Explanation:
 
        
             
        
        
        
At the lowest point on the Ferris wheel, there are two forces acting on the child: their weight of 430 N, and an upward centripetal/normal force with magnitude n; then the net force on the child is
∑ F = ma
n - 430 N = (430 N)/g • a
where m is the child's mass and a is their centripetal acceleration. The child has a linear speed of 3.5 m/s at any point along the path of the wheel whose radius is 17 m, so the centripetal acceleration is
a = (3.5 m/s)² / (17 m) ≈ 0.72 m/s²
and so
n = 430 N + (430 N)/g (0.72 m/s²) ≈ 460 N
 
        
             
        
        
        
Currently, the magnetic south pole lies about ten degrees distant from the geographic north pole, and sits in the Arctic Ocean north of Alaska. The north end on a compass therefore currently points roughly towards Alaska and not exactly towards geographic north.
 
        
             
        
        
        
Answer: Impulse = 4 kgm/s 
Explanation:
From the question, you're given the following parameters:
Momentum P1 = 12 kgm/s 
Momentum P2 = 16 kgm/s 
Time t = 0.2 s
According to second law of motion, 
Force F = change in momentum ÷ time
That is 
 F = (P2 - P1)/t
Cross multiply 
Ft = P2 - P1
Where Ft = impulse 
Substitute P1 and P2 into the formula 
Impulse = 16 - 12 = 4 kgm/s 
The magnitude of the impulse is therefore 4 kgm/s.