Answer:
A)an object whose electrons can be aligned in the same direction
Explanation:
Those materials produce magnetic field is known as magnet materials.A magnet is a object whose electrons are aligned in the same direction.
All ferromagnetic materials are magnetic materials. The examples magnetic materials are Co (Cobalt),Ni (Nickel) etc.We know that magnetic filed are produce by the current.
60 dekameters is equal to 0.6 kilometers (km).
(There is no measurement abbreviated 'dkm')
Answer :
The distance is 109.89 m.
Explanation :
Given that,
Height = 40 m
Angle = 20°
We need to calculate the base of the plateau
Using formula of angle
Where, h = height
x = base
= angle
Put the value into the formula
Hence, The distance is 109.89 m.
Can a measurement be exact? No
