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3 years ago

Which statement explains why astigmatism causes objects to appear blurry?

2 answers:

8 0

In the defect of "Astigmatism" eye cannot focus on common point, so the light rays get deflected. Here, the lens has two different focal points.

In short, option C is your final answer.

Hope this helps!

Elis [28]3 years ago

4 0

'C' is a simple explanation of astigmatism.

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A 6 kg object falls 10 m. The object is attached mechanically to a paddle-wheel which rotates as the object falls. The paddle-wh

maksim [4K]

Answer: $16.234^{\circ}C$

Explanation:

Given

Mass of object (m)=6 kg

falling height(h)=10 m

mass of water( $m_w$ )=600 gm

temperature of water =15

specific heat of water $=4.186 j/g-^{\circ}C$

Let T be the Final Temperature of water

Here Object Potential Energy is converted into Heat energy which will be absorbed by water

Potential Energy(P.E.) $=mgh=6\times 9.81\times 10=588.6 J$

Heat supplied $=m_wc(\Delta T)$

$H.E.=600\times 4.186\times (T-16)$

$588.6=2511.6\times (T-16)$

T-16=0.234

$T=16.234^{\circ}C$

This is not an efficient way of heating water as there is only $0.234^{\circ}C$ increase in temperature.

5 0

3 years ago

a conical pendulum is formed by attaching a 50g mass to a 1.2m string. The mass swings around the circle of radius 25cm (a) calc

kipiarov [429]

A. 0.5 miles an hour
B. 0.2 miles an hour

4 0

3 years ago

Jfdojbfkkjds vdf;ifdfdi

Oliga [24]

Answer:

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6 0

3 years ago

You walk six blocks east along 12th Street, then three blocks west, then one block east, then six blocks east, then seven blocks

Oksana_A [137]

Displacement depends upon the path taken as it is a vector.

From your problem above we would have a total displacement of;
Defining +x direction as east and -x direction as west

6east-3west+1east+6east-7west

6-3+1+6-7=3 blocks east or + x-direction

So even though they walked a total of 17 blocks it ends up only being 3 blocks total in +xdirection that was travelled by displacement.

Any questions please ask.

5 0

2 years ago

Where does the kinetic energy come fromwhen you roll down a hill?

Lapatulllka [165]

From the change of GPE into KE. Conservation of energy tells us this.

8 0

3 years ago