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3 years ago

Radio waves just like light waves can be reflected refracted and diffracted and polarized.

Physics

2 answers:

LUCKY_DIMON [66]3 years ago

7 0

The answer was True (:

hoa [83]3 years ago

5 0

<span>Radio waves just like light waves can be reflected refracted and diffracted and polarized. The answer is True. </span>These characteristics are the common phenomena for electromagnetic (EM) waves, and Radio Waves are electromagnetic Waves so much so that they obey reflection, refraction, and diffraction.

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A hydrogen atom in a galaxy moving with a speed of 6.65×106 m/???? away from the Earth emits light with a wavelength of 5.13×10−

Mumz [18]

Answer:

The observed wavelength on Earth from that hydrogen atom is $5.24\times 10^{-7}\ m$ .

Explanation:

Given that,

The actual wavelength of the hydrogen atom, $\lambda_a=5.13\times 10^{-7}\ m$

A hydrogen atom in a galaxy moving with a speed of, $v=6.65\times 10^6\ m/s$

We need to find the observed wavelength on Earth from that hydrogen atom. The speed of galaxy is given by :

$v=c\times \dfrac{\lambda_o-\lambda_a}{\lambda_a}$

$\lambda_o$ is the observed wavelength

$\lambda_o=\dfrac{v\lambda_a}{c}+\lambda_a\\\\\lambda_o=\dfrac{6.65\times 10^6\times 5.13\times 10^{-7}}{3\times 10^8}+5.13\times 10^{-7}\\\\\lambda_o=5.24\times 10^{-7}\ m$

So, the observed wavelength on Earth from that hydrogen atom is $5.24\times 10^{-7}\ m$ . Hence, this is the required solution.

8 0

3 years ago

Cynthia forgot to put the fabric softener in the wash. As her socks tumbled in the dryer, they became charged. If a small piece

polet [3.4K]

Answer:

E = 24000 N/C = 24 KN/C

Explanation:

The electric field experienced by a test charge is given by the following formula:

$E = \frac{F}{q}\\\\$

where,

E = Electric Field = ?

F = Force of attraction = 3 x 10⁻⁶ N

q = Charge on piece of lint = 1.25 x 10⁻¹⁰ C

Therefore, using these values in the equation, we get:

$E = \frac{3\ x\ 10^{-6}\ N}{1.25\ x\ ^{-10}\ C}\\\\$

6 0

3 years ago

Why do you think bacteria can live in your digestive system without making you sick?

Vikentia [17]

Bacteria in your stomach is actually good for you because it helps destroy harmful bacteria by picking at undigested leftovers and micromanaging calories.

3 0

3 years ago

Read 2 more answers

A car moving at some speed hits the brakes and skids to a stop after 13 m on a level road. If the coefficient of friction for th

vesna_86 [32]

Answer:

12.974 m/s

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

g = Acceleration due to gravity = 9.81 m/s²

$\mu$ = Coefficient of friction =0.66

a = Acceleration = $\mu g$

$v^2-u^2=2as\\\Rightarrow -u^2=2\mu gs-v^2\\\Rightarrow u=\sqrt{v^2-2\mu gs}\\\Rightarrow u=\sqrt{0^2-2\times -(9.81\times 0.66)\times 13}\\\Rightarrow u=12.974\ m/s$

Car's original speed before braking was 12.974 m/s

6 0

3 years ago

Un niño de 24 kilogramos se sienta en el punto ap(2,5) y otro de 12kg en el punto bp(8.12)

yanalaym [24]

Answer: the equilibrium point or center of mass is (4, 7.33)

Explanation:

1) Physicial principles:

The equilibrium point is the center of mass.

Call Xc and Yc the coordinates of the center of mass (Xc, Yc), then:

Xc is given by the equation Xc = (m₁X₁ + m₂X₂) / (m₁ + m₂)

Yx is given by the equation Yc = (m₁Y₁ + m₂Y₂) / (m₁ + m₂)

2) Data:

m₁ = 24 kg
X₁ = 2
Y₁ = 5
m₂ = 12 kg
X₂ = 8
Y₂ = 12

3) Solution:

Xc = (m₁X₁ + m₂X₂) / (m₁ + m₂) = (24×2 + 12×8) / (24 + 12) = 4

Yc = (m₁Y₁ + m₂Y₂) / (m₁ + m₂) = (24×5 + 12×12) / (24 + 12) = 7.33

Answer: the equilibrium point or center of mass is (4, 7.33)

5 0

3 years ago