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Anton [14]
3 years ago
7

When describing electromagnetic radiation, there is a(n) _____________ relationship between wavelength and frequency and the gre

ater the frequency, the ____________ energy the electromagnetic radiation has. A) direct; less B) direct; more C) inverse; more D) inverse; less
Physics
2 answers:
ololo11 [35]3 years ago
8 0

Correct option is (C) inverse ; more

.

d1i1m1o1n [39]3 years ago
5 0

Answer:

The correct opcion is C) inverse; more

Explanation:

Electromagnetic radiation is a combination of electric and magnetic fields that propagate through space carrying energy from one place to another.

Electromagnetic radiation can be described as a wave that is characterized by three fundamental parameters:

  • Wavelength (λ): It is the distance between the crests of two consecutive waves, and is measured in units of length (m). The amplitude of the wave depends on the radiant power of the emitting source.
  • Frequency (ν or f): The number of times a wave oscillates in a second and is measured in cycles / second or hertz (Hz).
  • Energy (E): The energy transported by electromagnetic radiation can be measured in Joules (J) or electron volts (eV).

The wavelength (λ) and frequency (f) of electromagnetic waves are related by the expression:

λ • f = c

where, c is the speed of light, λ is the wavelength of the light and f is the frequency.

Therefore, observing this expression, you will see that there is an inverse relationship between wavelength and frequency. The speed of light is constant in a given medium, so with an increase in frequency, the wavelength must decrease.

On the other hand, the frequency is directly proportional to the energy that carries a radiation, according to the equation:

E = h.f

where h is the Planck constant = 6.63 · 10-34 J / s.

Looking at this expression, you will see that the relationship between energy and frequency is direct, this means that when the frequency increases, the energy increases.

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What is linear motion?
zalisa [80]

Answer:

Linear motion is a one-dimensional motion along a straight line, and can therefore be described mathematically using only one spatial dimension.

Explanation:

5 0
3 years ago
Read 2 more answers
A missile is launched upward with a speed that is half the escape speed. What height (in radii of Earth) will it reach?
timofeeve [1]

Answer:

The height (h) will be: \frac{3}{4}R =h  

Explanation:

The scape speed equation is given by:

v_{scape}=\sqrt{\frac{2GM}{R}}

Now, the speed of the missile is

v_{missile}=\frac{1}{2}v_{scape}

v_{scape}=\frac{1}{2}\sqrt{\frac{2GM}{R}}

Using the conservation of energy, we can find the maximu height of the missile.

E_{i}=E_{f}

\frac{1}{2}mv_{scape}^{2}-mgR =-mgh

\frac{1}{2}\frac{2GM}{4R}-gR =-gh

\frac{GM}{4R}-gR =gh

Let's recall that g = GM/R², using the equivalence principle. When R is the radius of the earth and M is the mass of the earth.

\frac{1}{4}gR-gR =-gh

\frac{1}{4}R-R =-h    

Therefore the height (h) will be:

\frac{3}{4}R =h    

I hope it helps you!

4 0
2 years ago
A sound wave has a frequency of 440 Hz. What is the period of this sound<br> wave?
monitta

Answer:

answer= 2.27 millisecond

Explanation:

Pitch of middle A corresponds to a frequency of 440 oscillation in 1 second.

we can write: A 440= oscillation/sec

440/sec = 440Hz

1/(440/sec)=(1/440)sec =0.00227sec

= 2.27milliseconds

7 0
3 years ago
Answer the following questions. Use complete sentences.
k0ka [10]

Answer:

The motion of a projectile consists of two independent motions:

- A uniform motion (constant velocity) along the horizontal direction

- A uniformly accelerated motion (constant acceleration, equal to the acceleration due to gravity) along the vertical direction

In terms of vectors, we have the following:

Velocity:

- The horizontal velocity does not change - therefore, this vector is constant

- The vertical velocity changes, as the vertical motion is accelerated - therefore, this vector changes. This is because there is a downward force acting on the projectile, the force of gravity.

Acceleration:

- There is no acceleration along the horizontal direction, so here the vector is zero

- The acceleration along the vertical direction is constant, and it is 9.8 m/s^2 in the downward direction (acceleration due to gravity)

8 0
3 years ago
An incandescent lightbulb emits 96 W of radiation. If the filanent is at a temperature of 3242 K, what is the area of the filame
Savatey [412]

Answer:

1.53 x 10^-5 m^2

Explanation:

use the Stefan's law

Energy per unit time = σ x A x T^4

σ = 5.67 x 10 -8 W/m^2 K^4

96 = 5.67 x 10^-8 x A x (3242)^4

A = 1.53 x 10^-5 m^2

3 0
3 years ago
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