Answer:
The potential difference between the plates is 
Explanation:
Given that,
Distance = 1.4 mm
Electric field strength 
Let the potential difference is V.
We need to calculate the potential difference between the plates
Using formula of electric field


Where, V = potential
d = distance
Put the value into the formula


Hence, The potential difference between the plates is 
Answer:
The answer is "
"
Explanation:
apply the formula for calculating the average velocity to the relative air


Given value:



The final answer is "
" in the south-east direction.
When a star is moving away from earth it appears blue