Answer:
Explanation:
Given
Temperature of the gas is increased from 100 to 200
Also we know that average kinetic energy of the molecules is 

Where 
R=Gas constant
 =Avogadro's number
=Avogadro's number
T=Temperature in kelvin

So kinetic energy increases by


 
        
             
        
        
        
 <span>Lets call F the friction force which will act horizontally backwards. 
As you are travelling at a constant velosity horizontally there is no overall resultant force in this direction. 
ie. the force you pull with will be equal to the friction force resisting you. (you will initially have to have pulled with a greater force than the friction to get the suitcase moving) 
the value of your force pulling is 60 cos26.9 (horizontally) - you should have learnt about resolving forces. 
this must be equal to F 
so 
F=60cos26.9 
F=53.5N
hope this helps you
please mark this as brainliest answer</span>
        
             
        
        
        
Answer:
1. A <em>series circuit </em>is a closed circuit which has all loads connected in a row and there is only one path for the current to flow.
2. The <em>Ohm's Law </em>state that a current flow through a resistor is directly proportional to the voltage across it 
3. A <em>parallel circuit </em>is a closed circuit divided into branches that it has two o more paths for the current to flow and the loads are parallel to each other which mean the voltage across them is the same for all loads. 
 
        
                    
             
        
        
        
D. rates of soil erosion are much lower during droughts that last several years