Answer:
1)
The total work done by outside force is 
2)
The total work done by the electric field is 
3)
The potential energy of the two sphere system is 
4)
The magnitude of the acceleration of sphere A is 
5)
The magnitude of the acceleration of sphere B is 
6)
The magnitude of velocity sphere A after a very long time is 
\
7) The magnitude of velocity sphere B after a very long time is 
Explanation:
The explanation is shown on the first and second uploaded image
C would be the right answer edu
Answer:
t = S / V where S is distance sound travels and V the speed of sound
S = 20 + 20 - v t where v is speed of bat and t time to hear echo
S = 40 - v t
t = (40 - S) / v = (40 - V t) / v substituting S from 1st equation
v t + V t = 40
t = 40 / (v + V) = 40 / (340 + 2) = .117 sec = 117 ms
Answer is C.
Water-holding capacity is controlled primarily by soil texture, and amount of organic matter. Soils with small particles containing clay have a larger surface are than those larger sand particles, and a large surface area that allows to hold more water.
