Answer:
CH4
Explanation:
CH4 is joined together by a covalent bond, aka a bond between two non-metals. Non-metals are found on the right side of the periodic table and include Carbon (C) and Hydrogen. Although Hydrogen is technically on the left side of the table, it has the characteristics of a non-metal. Futhermore, Ionic bonds generally are between an element on the right joined with an element on the left. This is because ionic bonds want charges that will cancel out to create a neutral molecule. 
example: LiF
Li→ Li+
F→F-
(Li+)+(F-)=charges cancel out.
 
        
             
        
        
        
A star with large luminosity would have a relatively low absolute magnitude. Absolute magnitude is a number that tells how bright a star is from the Earth. However, this scale is backwards and logarithmic, so having a large absolute magnitude value means that the star is faint.
        
             
        
        
        
Answer:
83.055  m
Explanation:
According to the given scenario, the calculation of skid distance is shown below:-

Where  
u = 11.3
v = 0
t = 14.7
Now placing these values to the above formula, 
So,

= 83.055  m
Therefore for computing the skid distance we simply applied the above formula i.e by considering the all items given in the question 
 
        
             
        
        
        
Answer:
<h3>Motion which repeats itself after regular intervals of time is known as periodic motion.</h3>
 
        
                    
             
        
        
        
To solve this problem it is necessary to apply the concepts related to
conservation of energy, for this case manifested through work and kinetic energy.


Where,
F= Force (Frictional at this case  )
)
d= Distance

Where,
m = mass
v = velocity
Equation both terms, 




Replacing with our values we have that


Therefore the shortest distance in which the truck can come to a halt without causing the crate to slip forward relative to the truck is 49.05m