Human error (average human reaction time is .2 seconds)
        
             
        
        
        
Answer:
what are you saying man. They do provide structure.
Explanation:
 
        
             
        
        
        
The right answer to this question is A. a crest that is toppling over. When a surfer rides an ocean wave on her surfboard, she is actually riding on a crest. The crest is the point on a wave with the maximum value or upward displacement within a cycle.
        
                    
             
        
        
        
Answer:
 Resistance =330 Ω
Tolerance = 33 Ω
Explanation:
see attached resistor color code table
 The first stripe is orange, which means the leftmost digit is a 3.
The second stripe is orange , which means the next digit is a 3.
The third stripe is brown.  Since brown is 1, it means add one zero to the right of the first two digits. 
The resistance is:
orange-orange-brown=  330 Ω
The tolerance is:
The fourth color band indicates the resistor's tolerance.  Tolerance is the percentage of error in the resistor's resistance.
 silver is 10%
A 330 Ω resistor has a silver tolerance band.  
<em>Tolerance = value of resistor x value of tolerance band </em>
= 330 Ω x 10% = 33 Ω
330 Ω stated resistance +/- 33 Ω tolerance means that the resistor could range in actual value from as much as 363 Ω to as little as 297 Ω.