Answer:
There are 4 forces because a parallelogram has 4 sides.
It is a quadilateral. Let me know if I am right or not.
For this case we can write each one of the vectors in the following way:

This means that the x-axis is defined as positive towards the west.
Then, the resulting vector is:

Answer:
Displacement vectors of 10 m west and 14 m west make a resultant vector that is 24 m west
Answer:

Explanation:
The capacitance of a capacitor in terms of the dielectric constant, area of the plate and the distance separating the plate is given by:

Where A = Area of the plate
d = distance between the plates
dielectric constant
Case 1:
When a meta slab of thickness, a, is added between the plates of the parallel plate capacitor , the effective separation between the plates becomes d+a
Therefore the capacitance of the capacitor becomes:
.......................(1)
Case 2:
Introducing a dielectric with dielectric constant K between the plates, the capacitance of the capacitor becomes:
.........................(2)
Equating (1) and (2)

Answer:
The period would decrease by sqrt(2)
Explanation:
The restoring force is given by,
F = -kx
According to Newton's second law of motion,
ma = -kx
ma + kx = 0
The time period is given by,
T =
Where
is the angular velocity and it is given by,
= 
Now if the spring constant is doubled then,

Thus,
=



Thus, The period would decrease by sqrt(2).
Hence, option D is correct.
Answer:
Myocardium. That is the type. (srry i was in a rush hope this helps)