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3 years ago

Jjjjjjjjjjjjjjjjjjjjjjjyyyyyyyyyyyyyyyy

Physics

1 answer:

MA_775_DIABLO [31]3 years ago

3 0

Answer:

oh your questions are not a question lol

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Explanation:

hope you will enjoy and mark me as brainlist

thank you

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The horizontal surface on which the block (mass 2.0 kg) slides is frictionless. The speed of the block before it touches the spr

ch4aika [34]

Answer:3.67 m/s

Explanation:

mass of block(m)=2 kg

Velocity of block=6 m/s

spring constant(k)=2 KN/m

Spring compression x=15 cm

Conserving Energy

energy lost by block =Gain in potential energy in spring

$\frac{m(v_1^2-v_2^2)}{2}=\frac{kx^2}{2}$

$2\left [ 6^2-v_2^2\right ]=2\times 10^3\times \left [ 0.15\right ]^2$

$v_2=3.67 m/s$

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3 years ago

When a 109 dB sound wave comes through an open window of area 0.485 m2, how much acoustic energy passes through the window in a

Ksju [112]

Answer:

57dB

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A race car accelerates on a straight road from rest to speed of 180 km/hr in 25s . Assuming uniform acceleration of the car thro

adelina 88 [10]

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4 years ago

A boy weighs 400N. what is his mass?

Basile [38]

≈40.8kg

this is to take up space

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4 0

3 years ago

Read 2 more answers

light waves are first transmitted through the ________ at the front of the eye and enter an opening called the ________ before s

viva [34]

The transmission of light waves is usually done through cornea of the eyes, then move through another opening which is regarded as pupil before it will get to the retina.

Light waves can be regarded as moving energy which contains microscopic particles known as photons.

The vision of the eye can be completed through the light wave passing through the components of the eyes and this process goes thus;

Light will move through the (cornea) which is situated at the front area of the eyes into lens.

Then both the cornea and the lens give room for the focusing of the light rays to the retina which is situated at the back of the eye .

Then through the help of the cells in the retina, the light will be absorbed and then be converted to electrochemical impulses and then transfer it to the brain as well as optic nerve.

Therefore, light wave are form of tiny microscopic particles.

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8 0

2 years ago