Answer:
Derived from the Hebrew יִצְחָק (Yitzhak), the name Isaac means “one who laughs” or “one who rejoices.” In the Old Testament of the Bible, Isaac is the firstborn son of Abraham. He is one of the three biblical patriarchs revered by Jews, Christians, and Muslims. ... Gender: Isaac is traditionally a masculine name.
 
        
             
        
        
        
Answer: 154.08 m/s
Explanation:
Average acceleration  is the variation of velocity
 is the variation of velocity   over a specified period of time
 over a specified period of time   :
:
 
Where:
 
 being
 being  the initial velocity and
 the initial velocity and  the final velocity
 the final velocity

Then:

Since  :
:

Finding  :
:


Finally:

 
        
             
        
        
        
Answer:
a.  W
W
Explanation:
 = temperature of the surface of sun = 5800 K
 = temperature of the surface of sun = 5800 K
 = Radius of the Sun = 7 x 10⁸ m
 = Radius of the Sun = 7 x 10⁸ m 
 = Surface area of the Sun
 = Surface area of the Sun
Surface area of the sun is given as 

 = Emissivity = 1
 = Emissivity = 1
 = Stefan's constant = 5.67 x 10⁻⁸ Wm⁻²K⁻⁴
 = Stefan's constant = 5.67 x 10⁻⁸ Wm⁻²K⁻⁴
Using Stefan's law, Power output of the sun is given as 

 
        
             
        
        
        
You are looking at yourself in a plane mirror, a distance of 3 meters from the mirror. your brain interprets what you are seeing in the mirror as being a person standing 6 meters from you.
<h3>Calculation</h3>
The plane mirror shows an exact replica of the real world. that means the distance of you from the mirror is the same distance as your reflection form the mirror at the opposite side of the mirror.
Thus, distance of image from the plane mirror is same as the distance of object (person) from the plane mirror but the image is formed behind the mirror.
Thereby we have v=u=3 m
Thus, distance between image and the person 
is d = v + u = 3 + 3 = 6 m
Thus, the person is 6 meters away from the image.
To know more such mirror problems, visit:
brainly.com/question/14687229
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