Answer:
200 m
Explanation:
Path difference of waves from A and B = 100m
For destructive interference
Path diff = ( 2n+ 1 ) λ / 2
100 = ( 2n+ 1 ) λ / 2
λ = 200 / ( 2n+ 1 )
For maximum λ , denominator should be smallest which is possible for
n =0
λ = 200 / 1
= 200 m
Answer:
the angle the ladder makes with the floor as seen by an observer on Earth is 71.9°
Explanation:
Given the data in the question and as illustrated in the diagram below.
speed of the ship v = 0.90c
base of the ladder from the wall x₀ = 3.0 m
top of the later above the floor y = 4.0 m
we determine angle θ.
from the diagram,
tanθ = y/x₀
tanθ = y / x₀√( 1 - v²/c² )
we substitute
tanθ = 4.0 / 3.0√( 1 - ((0.9c)²/c²) )
tanθ = 4.0 / 3.0√( 1 - ((0.9²)c²/c²) )
tanθ = 4.0 / 3.0√( 1 - (0.9²) )
tanθ = 4.0 / 3.0√( 1 - 0.81 )
tanθ = 4.0 / 3.0√0.19
tanθ = 4.0 / 1.30766968
tanθ = 3.058876
θ = tan⁻¹( 3.058876 )
θ = 71.8965 ≈ 71.9°
Therefore, the angle the ladder makes with the floor as seen by an observer on Earth is 71.9°
In my own words, I would say that physics is an area of science that seeks to explain and understand the fundamental nature of the dynamics of objects, essentially defining how objects can interact, in space and in time.
A magnetic substance has magnetic fields. These fields start at the North Pole wrap aroundthe magnet, and terminate at the south pole of the magnet. All magnetic substances have <span>north and south poles.</span>