Polarizing filters: used to show  light has some properties of a wave in that way of  property is that light can be thought of as traveling forward in waves, with the <span>wave. sorry if this is too late but google is good</span>
        
             
        
        
        
Answer:
10.99 m 
Explanation:
m = mass of the block = 0.245 kg 
k = spring constant of the vertical spring = 4975 N/m
x = compression of the spring = 0.103 m 
h = height to which the block rise 
Using conservation of energy 
Potential energy gained by the block = Spring potential energy
mgh = (0.5) k x²
(0.245) (9.8) h = (0.5) (4975) (0.103)²
h = 10.99 m 
 
        
             
        
        
        
Final velocity = 5km/sec = 5000 m/sec
Initial velocity = 0, mass = 5kg and force = 500,000 N
F = m(Vf-Vi)/time
Time = m(Vf-Vi)/force = 5*5000/500000 = 0.05 seconds
So, it takes 0.05 sec to arrive at the speed of 5km/s.
        
             
        
        
        
Answer: Increase in competition for abiotic factors.
Explanation: Resource availability is one of the main factors determining the ecological dynamics of populations or species. Fluctuations in resource availability can increase or decrease the intensity of resource competition. Resource availability and competition can also cause evolutionary changes in life-history traits