A wall acted upon by a force of 20N does not move. The work done on the wall in this process is
2 answers:
The work done on the wall is zero
Explanation:
The work done by a force on an object is given by the equation:
where :
F is the magnitude of the force
d is the displacement
is the angle between the direction of the force and the displacement
In this problem, we have:
F = 20 N is the force applied on the wall
d = 0 is the displacement, since the wall does not move
Therefore, we immediately see that regardless of the angle, the work done is zero:
In fact, work is done only if the displacement is non-zero.
Learn more about work:
#LearnwithBrainly
You might be interested in
Answer:
a) 10.6V
b) E = 4.9V/m, +x direction
c) E = 4.9V/m, +x direction
Explanation:
You have the following function:
(1)
for the potential in a region between x=0 and x=6.00 m
a = 10.6 V
b = -4.90V/m
a) for x=0 you obtain for V:
b) The relation between the potential difference and the electric field can be written as:
(2)
the direction is +x
c) The electric field is the same for any value of x between x=0 and x=6m.
Hence,
E = 4.9V/m, +x direction