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3 years ago

Name two things radio waves have in common with visible light

1 answer:

8 0

Radio waves and visible light, as we perceive it, are both part of the EM spectrum. The only difference between them in terms of our perception is that we don't have receptors to 'see' radio waves. That's where radio receivers come into the picture*, to convert radio waves into sound impulses that we can hear.

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n Fig. 30.11, R = 15.0 Ω and the battery emf is 6.30 V. With switch S2 open, switch S1 is closed. After several minutes, S1 is o

Alex_Xolod [135]

The inductance of the coil and time is mathematically given as

L=0.1035H
t=12.8 ms

<h3>What is the inductance of the coil and How long after S1 is opened will the current reach 1.00% of its original value?</h3>

Generally, the equation for Current is mathematically given as

$\begin{aligned}I(t) &=I_{0} e^{\frac{-t}{\tau}} \\&I(t) =I_{0} e^{\frac{-R t}{L}}\end{aligned}$

Therefore

$L=\frac{-t R}{\ln \left(\frac{I}{I_{0}}\right)}$

Hence, the Maximum current is,

$\begin{aligned}I_{0} &=\frac{\varepsilon}{R}=\frac{6.30}{15} \\&I_{0} =0.42 \end{aligned}$

Thus,

$L &=\frac{-\left(0.280 * 10^{-3})(13.0)}{\ln \left(0.280}{0.42})} \\$

L=0.1035H

In conclusion, Time taken after S1 is opened is,

$(0.01) I_{0}=I_{0} e^{\frac{-t}{\tau}}$

Time constant is,

$\tau=\frac{L}{R}\\\\\tau=\frac{0.042}{15} \\$

$\tau=0.0028s$

$(0.01) I_{o} &=I_{o} e^{\frac{-t}{(0.00028)}} \\\\t=-\ln (0.01)(0.0028) \\\\t=-(-4.605)(0.0033) \\\\t=0.01289s$

t=12.8 ms

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3 0

2 years ago

Which statement best reflects a change in climate? It's very windy today and will rain later. Droughts in California have become

qwelly [4]

The first one it's very windy today and will rain later.

5 0

3 years ago

Read 2 more answers

To make a bounce pass, a player throws a 0.60-kg basketball toward the floor. The ball hits the floor with a speed of 5.4 m/s at

artcher [175]

Answer:

2.74 N-s

Explanation:

m = mass of the basketball thrown towards the floor = 0.60 kg

v₀ = initial speed of the ball before hitting the floor = 5.4 m/s

θ = angle made by the direction of motion of the ball with the vertical before and after the collision = 65°

I = Impulse delivered to it by the floor

Impulse delivered to the ball by the floor is given as

I = 2 m v₀ Cosθ

Inserting the values

I = 2 (0.60) (5.4) Cos65

I = 2.74 N-s

5 0

4 years ago

A simple model of a hydrogen atom is a positive point charge +e (representing the proton) at the center of a ring of radius a wi

Norma-Jean [14]

Answer:

Now e is due to the ring at a

We say

1/4πEo(ea/ a²+a²)^3/2

= 1/4πEo ea/2√2a³

So here E is faced towards the ring

Next is E due to a point at the centre

E² = 1/4πEo ( e/a²)

Finally we get the total

Et= E²-E

= e/4πEo(2√2-1/2√2)

So the direction here is away from the ring

8 0

4 years ago

3. Which types of light are not absorbed by genetic material?

Radda [10]

Given what we know, we can confirm that genetic material is not known to absorb light originating from an infrared or microwave radio source.

<h3>What light does genetic material absorb?</h3>

Genetic material is known to absorb UV light.
This represents ultraviolet light.
UV light is electromagnetic radiation, and the primary source of UV light that we are exposed to is the sun.

Therefore, given that the only form of light listed that genetic material is known to absorb is that of Ultraviolet or UV light, we can confirm that the answer to the question proposed is infrared and microwave radio light.

To learn more about UV light visit:

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3 0

3 years ago