1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alexus [3.1K]
3 years ago
15

Electromagnetic waves are classified into forms such as radio waves, microwaves, and infrared waves, based on the amount of ener

gy they carry. Which property of an electromagnetic wave determines the level or amount of energy it carries?
A) speed
B) intensity
C) phase
D) wavelength
Physics
2 answers:
Anna [14]3 years ago
6 0

Answer: D) wavelength

Explanation:

The energy E of an electromagnetc wave is given by the following formula:  

E=h.f (1)

Where:  

h is the Planck constant  

f is the frequency  

Now, the frequency has an inverse relation with the wavelength \lambda:  

f=\frac{c}{\lambda} (2)  

Where c is the speed of light in vacuum

Substituting (2) in (1) we have:

E=\frac{hc}{\lambda} (3)

This means the amount of energy an electromagnetic wave carries depends on its wavelength (or its frequency), because the speed of light and h are constant.

loris [4]3 years ago
4 0
<h2>Answer:</h2>

The property is <u>D) wavelength</u>.

<h2>Explanation:</h2>

Wavelength can be found by the distance between successive points on a wave. It can be consecutive corresponding crests, troughs or zero crossings. We can get the most accurate form of wavelength on sinusoidal waves, which are smooth and repetitive.

Two waves which are travelling with the same rate of speed can have different wavelength with varied frequencies. A light’s wavelength varies with varying color.

<u>For example:</u> the wavelength of red is longer than violet.

You might be interested in
Which of the following is a benefit of physical activity?
zaharov [31]

Answer:

B

Explanation:

better concentration

5 0
3 years ago
Read 2 more answers
An object that is accelerating may be
Elenna [48]

It must be either speeding up, or slowing down, or turning. There are no other possibilities.

6 0
3 years ago
if the kinetic and potential energy in a system or equal to the potential energy increases what happens as a result
8090 [49]

Answer:If the kinetic and potential energy in a system are equal, then the potential energy increases. ... Stored energy decreases. Energy of motion decreases. Total energy decreases

Explanation:

8 0
3 years ago
The atomic number of an element is 19. Which is true of this element?
bezimeni [28]
C.
<span>Each atom has 19 proton
</span> the atomic number is the same as protons
4 0
3 years ago
1. An electron (Q=16x10^-20 C, m=1x10^-30 kg) moving at half a megameter per second up the page enters a region with a uniform m
jek_recluse [69]

Explanation:

It is given that,

Charge on electron, q=16\times 10^{-20}\ C

Mass of the electron, m=9.1\times 10^{-31}\ kg  

Speed of the electron, v=0.5\ Mm/s=0.5\times 10^6\ m/s            

Magnetic field, B = 1 T (directed out of the page)

Let F is the magnetic force acting on the electron. It is given by :

F=qvB\ sin\theta

Here, \theta=90^{\circ}

F=qvB    

F=16\times 10^{-20}\ C\times 0.5\times 10^6\ m/s\times 1\ T  

F=8\times 10^{-14}\ N

Using the right hand rule, the direction of magnetic force is upward to the plane of the paper. Also, the electron will follow the circular path.  It is given by :

r=\dfrac{mv}{qB}

r=\dfrac{9.1\times 10^{-31}\ kg\times 0.5\times 10^6\ m/s}{16\times 10^{-20}\ C\times 1\ T}

r=2.84\times 10^{-6}\ m

Hence, this is the required solution.                                    

7 0
3 years ago
Other questions:
  • A heat engine operates in a Carnot cycle between 75◦C and 492◦C. It absorbs 19300 J of energy per cycle from the hot reservoir.
    14·1 answer
  • A circle has an initial radius of 50ft when the radius begins decreasing at a rate of 2ft/s. what is the rate of change of the a
    8·1 answer
  • The wheel of a car has a radius of 0.413 m. If the wheel rotates at 456 revolutions per minute, what is the speed (in m/s) at wh
    11·2 answers
  • Which statement is NOT true?
    9·1 answer
  • Two large parallel metal plates are 1.2 cm apart and have charges of equal magnitude but opposite signs on their facing surfaces
    15·1 answer
  • After leaving the end of a ski ramp, a ski jumper lands downhill at a point that is displaced 30 m horizontally from the end of
    14·1 answer
  • Crude oil is a mixture of many different components. The extraction of crude oil from the Earth is important, but its refinement
    10·1 answer
  • In which situation is a person doing work on an object?
    11·2 answers
  • 4–72 A person puts a few apples into the freezer at 215°C to cool them quickly for guests who are about to arrive. Initially, th
    7·1 answer
  • n a level football field a football is projected from ground level. It has speed 9.0 m/sm/s when it is at its maximum height. It
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!