Answer:
The value is
Explanation:
From the question we are told that
The value of the far point is
The distance of the lens to the eye is
Generally
Generally the power spectacle lens needed is mathematically represented as
Here is the object distance which for a near sighted person is
And is the image distance which is evaluated as
=>
=>
So
=>
=>
Answer:
a. an increase in the mass on the spring.
Explanation:
T = 2π/ω = 2π/√(k/m) = 2π√(m/k)
2π is a constant
as m is in the numerator, increasing mass will increase the period.
<span>Answer: V/n = constant</span>
Answer:
D = 104.4 m
Explanation:
We are given two displacement vectors. One in north direction other in east direction. We know that north and east directions are perpendicular to each other. Hence, the displacements vectors are also perpendicular to each other. Therefore, there resultant can be found by using Pythagora's Theorem like rectangular components method.
D = √(Dₓ² + Dy²)
where,
D = Magnitude of vector sum of both displacements = ?
Dₓ = Magnitude of Displacement Vector in east direction = 30 m
Dy = Magnitude of Displacement Vector in North Direction = 100 m
Therefore,
D = √[(30 m)² + (100 m)²]
<u>D = 104.4 m</u>
Answer:
Explanation:
= Permittivity of free space =
V = Volume of cube =
= Charge density =
Electric flux is given by
The electric flux through the surface of the cube is