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sdas [7]
3 years ago
8

What condition can result when either the cornea or the lens is misshapen? astigmatism nearsightedness farsightedness color blin

dness
Physics
2 answers:
Hitman42 [59]3 years ago
6 0

What condition can result when either the cornea or the lens is misshapen? astigmatism nearsightedness farsightedness color blindness

Answer:

Astigmatism

Explanation:

Astigmatism can be defined as a eye defects that is causes due the cornea or the lens of a person's eyes been irregularly curved or misshapen.

Due to the irregular curvature or misshapen of the cornea or lens of the eye, eye is unable to focus light.

Symptoms of Astigmatism are: feelings of dizziness, headaches, blurry visions.

After proper eye examination, Astigmatism in a person can be treated or managed by :

a. Consumption of fruits and vegetables rich in Vitamin A, B and C.

b. Undergoing a refractive surgery.

c. Usage of eye glasses or contact lens.

solong [7]3 years ago
6 0

Answer: Astigmatism

Explanation:

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Which type of plate boundary is most closely associated with the formation of new ocean floor?
Ludmilka [50]

Answer:

C) Divergent

Explanation:

Magma which is present in the underlying mantle comes out at divergent plate boundaries. The reason of coming out magma is that heat in the mantle makes the crust less dense. After coming out, magma cools down and solidifies to form a new ocean floor.  Hence, divergent plate boundary is most closely related with formation of new ocean floor.

5 0
3 years ago
What is the frequency of a sound wave that has a wave length of 3.5 m?
polet [3.4K]

Answer:

85.654988MHz

Explanation:

 f = C/λ

λ (Lambda) = Wavelength in meters

c = Speed of Light (299,792,458 m/s)

f = Frequency (MHz)

299,792,458 m/s. ÷ 3.5. = 85.654988MHz

3 0
3 years ago
A 40-turn coil has a diameter of 11 cm. The coil is placed in a spatially uniform magnetic field of magnitude 0.40 T so that the
seropon [69]

Answer:

(a) emf = 0.507 V

(b) emf = 0.0507 V

(c) emf = 0.00234 V

Explanation:

Given;

number of turns of the coil, N = 40 turns

diameter of the coil, d = 11 cm

radius of the coil, r = 5.5 cm = 0.055 m

magnitude of the magnetic field, B = 0.4 T

The magnitude of the induced emf is calculated as;

emf = - N\frac{d\phi}{dt} \\\\where;\\\\\phi \ is \ magnetic \ flux= BA \\\\A \ is the \ area \ of \ the \ coil = \pi r^2 = \pi (0.055)^2 = 0.0095 \ m^2\\\\emf = - N \frac{dB.A}{dt} = -NA\frac{dB}{dt} \\\\emf = -NA\frac{(B_2 - B_1)}{t} \\\\emf = NA \frac{(B_1 - B_2)}{t} \\\\the \ final \ magnetic \ field \ is \ reduced \ to \ zero;\ B_2 = 0\\\\emf = \frac{NAB_1}{t}

(a) when the time, t = 0.3 s

emf = \frac{NAB_1}{t} = \frac{40\times 0.0095\times 0.4}{0.3} = 0.507 \ V

(b) when the time, t = 3.0 s

emf = \frac{NAB_1}{t} = \frac{40\times 0.0095\times 0.4}{3} = 0.0507 \ V

(c) when the time, t = 65 s

emf = \frac{NAB_1}{t} = \frac{40\times 0.0095\times 0.4}{65} = 0.00234 \ V

7 0
3 years ago
Which atomic model was proposed as a result of j. J. Thomson’s work?
EleoNora [17]
<h2>Answer: The "raising pudding" atomic model</h2>

Explanation:

<u>During the 19th century the accepted atomic model, was Dalton's atomic model</u>, which postulated the atom was an <u>"individible and indestructible mass".</u>

However, at the end of 19th century J.J. Thomson began experimenting with cathode ray tubes and found out that atoms contain small subatomic particles with a negative charge (later called <u>electrons</u>).  This meant the atom was not indivisible as Dalton proposed. So, Thomson developed a new atomic model.

Taking into consideration that at that time there was still no evidence of the atom nucleus, Thomson thought the electrons (with negative charge) were immersed in the atom of positive charge that counteracted the negative charge of the electrons. <u>Just like the raisins embedded in a pudding or bread. </u>

That is why this model was called the <u>raisin pudding atomic model.</u>

4 0
4 years ago
Subduction occurs at which of the following tectonic plate boundaries?
hjlf
I think the answer is:
B) oceanic crust-continental crust
8 0
4 years ago
Read 2 more answers
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