Answer:
A. 51.42 m.
B. 17.14 s.
Explanation:
Using equations of motion:
vf^2 = vi^2 + 2 * aS
Where, 
vf = final velocity
a = acceleration
S = distance to which swan traveled
vi = 0 m/s
6.00^2 = 2 * 0.350S
S = 36/0.7
= 51.42 m.
B.
vf = vi + at
6 = 0 + 0.35t
t = 6/0.35
= 17.14 s.
 
        
             
        
        
        
Answer:
Seismic waves
Explanation:
seismic waves are not represented by electromagnetic graphs, nor can they be reflected on an electromagnetic spectrum. Visible light, radio waves, and microwaves are all electromagnetic waves, which are represented by graphs and electromagnetic spectrums.
 
        
             
        
        
        
Answer:
F = 176.175 N
Explanation:
given,  
radius of merry - go - round = 2.7 m 
mass of the disk = 800 kg  
speed of the merry- go-round = 18 rpm  
                                                  = 18 
                                                  = 1.88 rad/s
time = 13 s
mass of two children = 25 kg  
ω = ω₀ + α t
1.88 = 0 + α(13)
α = 0.145 rad/s²
we know 
τ = I α
so,
 
  
 
 
 
  
τ = I α
τ = 3280.5 x 0.145
τ = 475.67 N m
τ = F x r
475.67 = F x 2.7
F = 176.175 N
 
        
             
        
        
        
He will swim 180m if he stays at a constant rate of 30m/min
Explanation:
First I’m going to use 6 min for the 5min 60s
Then if he swims 30m/min then I’m 6min, 30•6 he’ll swim 180m
Hope this helps!