Answer:
F = 2985.125 N
Explanation:
Given that,
The radius of curvature of the roller coaster, r = 8 m
Speed of Micheal, v = 17 m/s
Mass of body, m = 65 kg  We need to find the net force acting on Micheal. Net force act the bottom of the circle is given by :

So, the net force is 2985.125 N.
 
        
             
        
        
        
One day, as I was walking, I found some sandy soil beside the road.
        
                    
             
        
        
        
Answer:

Explanation:
 = Length of wire = 65 m
 = Length of wire = 65 m
 = Initial current = 1.8 A
 = Initial current = 1.8 A
 = Final current = 2.9 A
 = Final current = 2.9 A
We know

and


so

The length of the wire remaining on the spool is  .
.
 
        
             
        
        
        
Answer:
80 degress is needed to boil 200g of water from 30 degress
 
        
             
        
        
        
The answer is A. Newton's third law of motion states that for every action, there is an equal and opposite reaction. A rocket exerts a large force on the gas that is in the rocket chamber (action). The gas thus exerts a large reaction force forward on the rocket (reaction). The large reaction force is called thrust.