Answer:

Explanation:
Regardless of the initial velocity of the pebble, the acceleration of the pebble is equal to the gravitational acceleration which is equal to 9.8 m/s2 towards downwards direction. 
This can be shown by Newton's Second Law. According to the law, the net force applied on an object is equal to mass times acceleration of that object. 
During the downward motion, the only force acting on the pebble is the gravitational force, hence its acceleration is equal to gravitational acceleration. 
 
        
             
        
        
        
Answer:


Explanation:
<u>Temperature Units Conversion
</u>
The conversion formula between Celsius and Fahrenheit temperature scales is well-known. But we'll use the provided data to derive the formula. Let's model the relationship between Fahrenheit (F) and Celsius (C) as a linear function like

Where m and b must be computed according to the pair of conditions given. The values for each temperature scale are (C,F)=(0,32) and (100,212). Replacing the first value

It means that  

By using the second point

Solving for m

Simplifying

So, the conversion formula is

Which is the widely known formula for temperature conversion
Solving for C, we get the inverse relation

 
        
             
        
        
        
Answer:
3
Explanation:
The closer an orbit is to the nucleus the fewer energy 
 
        
             
        
        
        
It won't be able to mix because one will not get evaporated and it wont go together
        
             
        
        
        
Answer:
a. 900 J
b. 0.383
Explanation:
According to the question, the given data is as follows
 Horizontal force = 150 N
Packing crate = 40.0 kg
Distance = 6.00 m
Based on the above information
a. The work done by the 150-N force is 


= 900 J
b. Now the coefficient of kinetic friction between the crate and surface is 


= .383
We simply applied the above formulas so that each one part could calculate