Which statement correctly compares infrared light to ultraviolet light

Physics

2 answers:

allochka39001 [22]3 years ago

8 0

I am fairly certain it's D. Good luck!

tino4ka555 [31]3 years ago

8 0

The correct answer is D. Infrared light has a lower frequency and a longer wavelength than ultraviolet light. Infrared and ultraviolet light are both electromagnetic waves which are waves that have electric and magnetic fields and can propagate without a medium. The electromagnetic spectrum, which shows the arrangement of e.m. waves in order of wavelength and frequency shows infrared light having a lower frequency and longer wavelength than ultraviolet light.

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A −3.0 nC charge is on the x-axis at x=−9 cm and a +4.0 nC charge is on the x-axis at x=16 cm. At what point or points on the y-

alexdok [17]

Answer:

y = 10.2 m

Explanation:

It is given that,

Charge, $q_1=-3\ nC$

It is placed at a distance of 9 cm at x axis

Charge, $q_2=+4\ nC$

It is placed at a distance of 16 cm at x axis

We need to find the point on the y-axis where the electric potential zero. The net potential on y-axis is equal to 0. So,

$\dfrac{kq_1}{r_1}+\dfrac{kq_2}{r_2}=0$

Here,

$r_1=\sqrt{y^2+9^2} \\\\r_2=\sqrt{y^2+15^2}$

So,

$\dfrac{kq_1}{r_1}=-\dfrac{kq_2}{r_2}\\\\\dfrac{q_1}{r_1}=-\dfrac{q_2}{r_2}\\\\\dfrac{-3\ nC}{\sqrt{y^2+81} }=-\dfrac{4\ nC}{\sqrt{y^2+225} }\\\\3\times \sqrt{y^2+225}=4\times \sqrt{y^2+81}$