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3 years ago

Which type of wave is not a light wave

1 answer:

4 0

A. RED WAVES IS NOT A LIGHT WAVE BECAUSE THERE IS NOT RED WAVE.

ALSO IF YOU DONT BELIEVE SEARCH IT FROM GOOGLE

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A ball is tossed in the air and released. It moves up, reverses direction, falls back down again, and is caught at the same heig

PolarNik [594]

Answer:

The potential energy has a maximum when the ball is a time that is half of the time for total travel

Explanation:

Generally potential energy is a the varies directly with the height according to this formula

$PE =mgh$

and the ball attains a maximum height when the time is equal to half of the total time taken to travel

8 0

3 years ago

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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.

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3 years ago

Electromagnetic waves do require a medium to travel. True False

pshichka [43]

Answer:

The Answer is false

Explanation:

Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.

8 0

3 years ago

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What 3 places on your body do not grow hair

gregori [183]

Forehead, Feet and Elbows, if the person is perfect health condition.

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3 years ago

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Plzzzzzzzzzzzzzzzzzz helpppp

satela [25.4K]

It’s c, the toy car changes direction

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3 years ago

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