Which kinds of objects emit visible light in the electromagnetic spectrum?

Physics

1 answer:

xeze [42]3 years ago

6 0

answer :

Visible: Our eyes detect visible light. Fireflies, light bulbs, and stars all emit visible light. Ultraviolet: Ultraviolet radiation is emitted by the Sun and are the reason skin tans and burns. "Hot" objects in space emit UV radiation as well.

Which objects emit electromagnetic waves?

All objects emit electromagnetic radiation according to their temperature. Colder objects emit waves with very low frequency (such as radio or microwaves), while hot objects emit visible light or even ultraviolet and higher frequencies.

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F=mv^2/R
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The catcher can catch the ball at a height of 0.96 m from the ground.

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$x=ut$

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Since a horizontal projection is assumed, the ball has no component of velocity in the downward direction.

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$y=\frac{1}{2} gt^2$

Substitute 9.8 m/s² for g and 0.461 s for t.

$y=\frac{1}{2} gt^2\\ y=\frac{1}{2}(9.8 m/s^2)(0.461s)^2=1.04 m$

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The catcher needs to hold his glove at a height of <u>0,96 m from the ground.</u>

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