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
postnew [5]
3 years ago
8

Electromagnetic waves can travel through empty space true or false

Physics
1 answer:
Mariana [72]3 years ago
6 0
False. Heat radiation from the sun cannot reach Earth, we cannot receive TV or GPS signals from satellites, and we cannot detect the light from distant stars.
Oh, wait . . .
You might be interested in
Get their food from breaking down dead material
Agata [3.3K]
"DECOMOPOSERS" get their food from breaking down dead material
4 0
3 years ago
GIVING BRAINLIEST Which statement best explains how Earth's magnetic field is generated? Earth's core spins slower than its crus
zimovet [89]

Answer:

The convection of heat within the mantle Rotation of liquid iron in the outer core

Explanation:

The electrical currents and convecting movements within the Earth's liquid core generate the planet's powerful magnetic field, which in turn drives the inner core in the way that can now be observed.

8 0
3 years ago
Calculate the wavelength in centimeters of radar energy at a frequency of 10 GHz. What is the frequency in gigahertz of radar en
ddd [48]

Answer:

Energy will be equal to 6.6\times 10^{-27}J

Frequency will be equal to 12\times 10^8Hz

Explanation:

We have given frequency of the radar f = 10 GHz =10\times 10^6Hz

Speed of light c=3\times 10^8m/sec

Plank's constant h=6.6\times 10^{-34}js

So energy E=h\nu,here h is plank's constant and \nu is frequency

So energy E=6.6\times 10^{-34}\times 10^{7}=6.6\times 10^{-27}J

In second case we have given wavelength = 25 cm = 0.25 m

Wavelength is equal to \lambda =\frac{c}{f}

So f=\frac{c}{\lambda }=\frac{3\times 10^8}{0.25}=12\times 10^8Hz

So frequency will be equal to 12\times 10^8Hz

8 0
3 years ago
Find the following answer based on the image.
saul85 [17]

<u>We are given:</u>

Mass of Neptune = 1.03 * 10²⁶ kg

Distance from the center of Neptune (r) = 2.27 * 10⁷

now, computing the value of the acceleration due to gravity (g)

<u>Finding g:</u>

We know the formula:

g = G(mass of planet) / (r)²

g = [6.67 * 10⁻¹¹ * 1.03*10²⁶] / (2.27*10⁷)                      [since G is 6.67*10⁻¹¹]

g = (6.87 * 10¹⁵) / (5.15 * 10¹⁴)

which can be rewritten as:

g = (6.87 * 10¹⁵ * 10⁻¹⁴) / 5.15

g = (6.87 * 10¹⁵⁻¹⁴) / 5.15

g = (6.87/5.15) * 10

g = 1.34 * 10

g = 13.4 m/s² <em>(approx)</em>

5 0
3 years ago
Please help on this one?
Sati [7]
I’m pretty sure it’s A
4 0
3 years ago
Other questions:
  • The dark, smooth surface areas of the Moon are known as
    11·1 answer
  • A bird can fly 25 km/h. How long does it take to fly 3.5km?
    12·1 answer
  • 1. what information does the atomic mass of an element provide?
    15·2 answers
  • Determine the maximum voltage that can be applied to a Teflon-filled parallel-plate capacitor having a plate area of 180 cm2 and
    8·2 answers
  • Cual es la importancia de los bienes comunes y distribuirlo de forma equitativa?​
    14·1 answer
  • Blue light (λ = 475 nm) is sent through a single slit with a width of 2.1 µm. What is the maximum possible number of bright frin
    7·1 answer
  • Billy pushes 15.0 kg block at a rate of 2.5 m/s/s eastward. What is the net force Billy applied to the block?
    7·2 answers
  • What is the Activation Energy for this reaction?
    13·2 answers
  • Could you please explain the step by step process of setting up this problem?
    11·1 answer
  • What is the structural unit of a substance called​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!