Answer:
B. does it transfer energy
A wave is a disturbance in a medium. Particles vibrate and TRANSFER their ENERGY to their neighbors.
 
        
             
        
        
        
Answer:
25.3 ft
Explanation:
The illustration of the problem is shown the attached image. 
The length of the ladder can be calculated using the Pythagoras theorem:

The hypotenuse is the length of the ladder.

 ........1
........1
Triangle ABC is similar to triangle AEF, hence:

BC =  .................2
.................2
Substitute 2 into 1
 =
 =  +
 + 
Let AE = x
 =
 = 
     = 
Minimize L with respect to x.
2 =
 = 
        = 
 
        
             
        
        
        
Answer: When a ray of light approaches a smooth polished surface and the light ray bounces back, it is called the reflection of light. The incident light ray which lands upon the surface is said to be reflected off the surface. The ray that bounces back is called the reflected ray.<u>
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</u>Have a great day and stay safe ! 
 
        
             
        
        
        
 
1. The property of a conductor by virtue of which it posses the flow of electric current through it is called resistance.
2. The resistance of a conductor depends on the cross sectional area of the conductor and it's resistivity.
 
3.This id due to the fact that the resistance of a wire is inversely proportional to the square of its diameter.
4.Due to at high temperatures , the alloy donot oxidize. Alloy doesn't melt readily and get deformed.