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3 years ago

Which wave has a disturbance that is parallel to the wave motion?

Physics

1 answer:

Leto [7]3 years ago

6 0

The answer is D.longitudinal

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Please help me and answer these questions.

jeka57 [31]

Answer:

Answer 2 is iron.

Answer 3 is magnetic induction.

Explanation:

I hope it's helpful!

3 0

3 years ago

Which answer best explains why clouds usually form high in the sky?

gulaghasi [49]

Answer: As air rises the moisture in it slowly reaches its saturation point and when this happens, tiny crystals of water start to condense and form clouds.

Explanation:

8 0

3 years ago

A feather of mass 0.001 kg falls from a height of 2 m. Under realistic conditions, it experiences air resistance. Based on what

snow_tiger [21]

As per initial given conditions first we will find the initial potential energy of the feather

$U = mgh$

$m = 0.001 kg$

$g = 9.8 m/s^2$

$h = 2m$

$U = (0.001kg)(9.8 m/s^2)(2m)$

$U = 0.0196 J$

now we know that few amount of its initial energy is lost in form of frictional energy loss

so remaining energy will be less than the initial potential energy

So final answer would be

A. KE < 0.0196 J

4 0

3 years ago

A converging lens has a focal length of 20 cm. An object 1 cm tall is placed 10 cm from the center of the lens. What is the heig

SCORPION-xisa [38]

Answer: 2 cm

Explanation:

Given , for a converging lens

Focal length : $f=20\ cm$

Height of object : $h=1\ cm$

Object distabce from lens : $u=-10\ cm$

Using lens formula: $\dfrac{1}{f}=\dfrac{1}{v}-\dfrac{1}{u}$ , we get

$\dfrac{1}{20}=\dfrac{1}{v}+\dfrac{1}{10}$ , where v = image distance from the lens.

On solving aboive equation , we get

$\dfrac{1}{v}=\dfrac{1}{20}-\dfrac{1}{10}=\dfrac{1-2}{20}=\dfrac{-1}{20}\Rightarrow\ v=-20\ cm$

Formula of Magnification : $m=\dfrac{v}{u}=\dfrac{h'}{h}$ , where h' is the height of image.

Put value of u, v and h in it , we get

$\dfrac{-20}{-10}=\dfrac{h'}{1}\\\\\Rightarrow\ h'=2\ cm$

Hence, the height of the image is 2 cm.

3 0

3 years ago

Select the correct answer.

love history [14]

Answer:

Explanation:

Givens

d = 100 meters plus the depth of the well

d = 100 + x where x is the depth of the well.

vi = 0 m/s The object is dropped. It was not thrown.

t = 5 seconds

a = 9.81 m/s^2

formula

d = vi*t + 1/2 a t^2

solution

100 + x = 0 + 1/2 * 9.81 * 5^2

100 + x = 122.625 Subtract 100 from both sides

x = 122.625 - 100

x = 22.6 m

The well is 22.6 meters deep.

5 0

3 years ago