5,625 x 10 ⁻¹⁰ is <span>the force between a 3 Coulomb charge and a 2 Coulomb charge separated by a distance of 5 meters.</span>
        
             
        
        
        
Answer:
distance between school and home is 21 miles
Explanation:
given data
in rush hour speed  s1 = 28 mph
less traffic speed s2 = 42 mph
time t = 1 hr 15 min = 1.25 hr
to find out
distance  d
solution
we consider here distance home to school is d and t1 time to reach at school
we get here distance equation when we go home to school that is
distance = 28 × t1    .......................1
and when we go school to home distance will be 
distance = 42 × ( t - t1 )
distance = 42 × ( 1.25 - t1 )     ...................2
so from equation 1 and 2 
28 × t1 = 42 × ( 1.25 - t1 )
t1 = 0.75
so
from equation 1 
distance = 28 × t1 
distance = 28 × 0.75 
distance = 21 miles
 
        
             
        
        
        
Answer: yes a quantity have different dimensions in different system of units . No,because in different system of units doesn't change the quantity but it only changes the numerical.
Good luck !
        
                    
             
        
        
        
Answer: 0.392 m/s
Explanation:
The Doppler shift equation is:

Where:
 is the actual frequency of the sound wave
 is the actual frequency of the sound wave
 is the "observed" frequency
 is the "observed" frequency
 is the speed of sound
 is the speed of sound
 is the velocity of the observer, which is stationary
 is the velocity of the observer, which is stationary
 is the velocity of the source, which are the red blood cells
 is the velocity of the source, which are the red blood cells
Isolating  :
:


Finally:
