Answer:
The fluid friction or drag can be reduced are minimised by giving special shape called streamlined shape to the objects which Move through fluids like air or water
Answer:
W = 12.96 J
Explanation:
The force acting in the direction of motion of the sand paper is the frictional force. So, we first calculate the frictional force:
F = μR
where,
F = Friction Force = ?
μ = 0.92
R = Normal Force = 2.6 N
Therefore,
F = (0.92)(2.6 N)
F = 2.4 N
Now, the displacement is given as:
d = (0.12 m)(45)
d = 5.4 m
So, the work done will be:
W = F d
W = (2.4 N)(5.4 m)
<u>W = 12.96 J</u>
Answer
Work done will be 
and it will be positive
Explanation:
We have given charge 
We have to find work done in moving the charge from 15 volt to 8 volt
Let 
So potential difference 
We know that work done 
, here Q is charge and V is potential difference
So work done 
It will be positive work done because work is done in moving charge from higher potential to lower potential
Openness to experience, Neuroticism, agreeableness, Extroversion, Conscientiousness
