A change that would most improve his results would be; D) Connecting the galvanometer to the coil 
 
        
                    
             
        
        
        
from the question 
x₁ = x-coordinate = 8 
y₁ = y-coordinate = - 4 
m = slope of line = 2/3 
slope form of the line is given as 
(y - y₁ ) = m (x - x₁)
inserting the values 
(y - (- 4) ) = (2/3) (x - 8)
(3) (y + 4) = (2) (x - 8)
multiplying each term inside the bracket by 3  and 2 respective on left and right side 
3y + 12 = 2 x - 16 
2 x - 3 y - 16 - 12 = 0 
2 x - 3 y - 28 = 0 
 
        
             
        
        
        
Answer:
350 miles
Explanation:
When the car starts 2 hours later, the train would have a head start of 
50 * 2 = 100 miles
The speed of the car relative to the train is
70 - 50 = 20 mi/hr
For the car to catch up with the train, it must cover the 100 miles difference at the rate of 20mi/hr. So the time it would need to cover this difference is
100 / 20 = 5 hours
After 5 hours, the car would have traveled a distance of
5 * 70 = 350 miles which is also the distance from the station to where the car catches up
 
        
             
        
        
        
Answer:
a nightstand on a lamp table 
Explanation: