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
alexdok [17]
3 years ago
7

Electromagnetic waves travel through space at a speed of _____.

Physics
2 answers:
Veseljchak [2.6K]3 years ago
6 0
The answer is C 300,000 kilometers per second

pogonyaev3 years ago
5 0

Ans: C) 300,000 kilometers per second

Electromagnetic waves are created by the movement of charges. This results in the generation of electric and magnetic fields which oscillate in a direction perpendicular to each other.

Electromagnetic waves carry a certain wavelength, frequency and speed. The speed of such waves as they travel through space is equal to the speed of light (c) = 3*10⁸ m/s

since 1 km = 10³ m

speed, c = 1 km * 3*10⁸ ms-1/10³ m

                = 300, 000 km/s

You might be interested in
Element 105 of periodic table
frosja888 [35]

Answer:

The correct answer is Dubnium which is denoted by the symbol Db.

pls give brainliest for the answer

3 0
3 years ago
Read 2 more answers
Two people singing off key in a choir
Snezhnost [94]
Is this the only party??
7 0
3 years ago
A proton has a positive electric charge of q = 1.6 × 10–19 coulombs. What is the electric potential at a point 5.3 × 10–11 m fro
ratelena [41]
<span>2.7 × 101 volts is the correct awnser</span><span>
</span>
8 0
4 years ago
Read 2 more answers
All battery powered devices, run off of what type of power?
ASHA 777 [7]

Answer:

Electrical energy

Explanation:

electrical energy Essentials. A battery is a device that stores chemical energy and converts it to electrical energy. The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit. The flow of electrons provides an electric current that can be used to do work.

4 0
3 years ago
A metal sign for a car dealership is a thin, uniform right triangle with base length b and height h. the sign has mass m.
Nesterboy [21]

(a) The moment of inertia of the sign for rotation about the side of length h is 1.24 kgm².

(b) The kinetic energy of the sign when it is rotating about an axis is 141.37 J.

<h3>Moment of inertia of the triangular sign</h3>

The moment of inertia of the sign for rotation about the side of length h is calculated as follows;

I = 2 x ¹/₃M(b/2)²

I = 2 x ¹/₃Mb² x ¹/₄

I = ¹/₆Mb²

I = ¹/₆ x 4.4 x 1.3²

I = 1.24 kgm²

<h3>Rotational kinetic energy of the ball</h3>

K.E(rot) = ¹/₂Iω²

where;

  • ω is angular speed = 2.4 rev/s = 2.4 x (2π rad)/s = 15.1 rad/s

K.E(rot) = ¹/₂(1.24)(15.1)²

K.E(rot) = 141.37 J

Learn more about rotational kinetic energy here: brainly.com/question/25803184

#SPJ1

3 0
2 years ago
Other questions:
  • Galileo proved that objects fall at the same time through his Leaning Tower of Pisa experiment but we see that a feather clearly
    13·1 answer
  • Explain how it is possible for the smallest white dwarfs to be the most massive.
    11·1 answer
  • An airplane wing is designed to make the air move
    8·1 answer
  • Problem 8--Circular Motion and projectile motion: Tarzan (mass 80 kg) swings at the end of an 8.0-m long vine. When directly und
    11·1 answer
  • A student examining a joint observes collagen-rich connective tissue fibers linking the bones, but finds no synovial cavity. Whi
    7·1 answer
  • The escape velocity on earth is 11.2 km/s. What fraction of the escape velocity is the rms speed of H2 at a temperature of 31.0
    8·1 answer
  • Water that soaks into Earth may become _____ under the surface.
    8·2 answers
  • Charlie's father built a tree house in their backyard. He constructed a spiral staircase around the tree trunk and installed a l
    5·1 answer
  • Can someone help me figure out how to do a function formula for fx and fy
    15·1 answer
  • PLS HELP ME
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!