Answer:
Explanation:
The path of waves reaching directly and through reflection from ionosphere will form a isosceles triangle.
Let the height be h . This will be height of a triangle of equal side whose base is of length 32 km. we shall calculate the length of one side of this triangle .
this length be l
l² = 16² + h²
l = √(256 +h² )
2l = 2√(256 +h² )
path difference = 2l - 32 km
For destructive interference
path difference = wavelength /2 for minimum height .
2l - 32 = .344/2
2√(256 +h² )- 32 = . 172
2√(256 +h² ) = 32.172
4(256 +h² ) = 1035
(256 +h² ) = 258.76
h² = 2.76
h = 1.66 km
"The pattern of electrons in their atoms" is the one among the following choices given in the question that <span>causes nickel and certain other metals to be magnetic. The correct option among all the options that are given in the question is the second option or option "B". I hope that the answer has helped you.</span>
Answer:
yes
Explanation:
The metal is closer than 20 cm to the magnet which is in the magnetic field.
Answer:
The law of inertia
Explanation:
A body at rest will remain at rest, and a body in motion will remain in motion unless it is acted upon by an external force
