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
8_murik_8 [283]
3 years ago
6

What is the wavelength of a 22.75×109Hz radar signal in free space? The speed of light is 2.9979×108m/s. Express your answer to

four significant figures and include the appropriate units.
Physics
2 answers:
Romashka-Z-Leto [24]3 years ago
8 0

Answer:

1.318 * 10^(-2) m

Explanation:

Parameters given:

Frequency, f = 22.75 * 10^9 Hz

Velocity, v = 2.9979 * 10^8 m/s

Wavelength is given as:

Wavelength = v/f

Wavelength = (2.9979 * 10^8) / (22.75 * 10^9)

Wavelength = 0.01318 m = 1.318 * 10^(-2) m

krek1111 [17]3 years ago
8 0

Answer:

wave length = 13.2 × 10⁻²m or 13.2cm

Explanation:

wavelength = speed of light / frequency

speed of light = 2.9979×10^8m/s

Frequency = 22.75×10^9Hz

 wavelength= speed / frequency

 \frac{2.9979  \times10^8}{22.75 \times 10^9}\\\\= 13.2 \times10^-^2 m

wave length = 13.2 × 10⁻²m or 13.2cm

You might be interested in
An arrow movirg 48.3 m/s has 5.22<br> kg•m/s of momentum. What is its<br> mass?
spin [16.1K]

Answer:

0.11 kg

Explanation:

Ft = MV

Ft = momentum 5.22kg m/s

M = mass

V = velocity 48.3m/s

Therefore

5.22 = M x 48.3

Divide both sides by 48.3

5.22/48.3 = M x 48.3/48.3

0.11 = M

M = 0.11kg

6 0
3 years ago
calculate the efficiency of a light bulb that had an input of 400 j transfers 100j as a light and 300j as heat.​
beks73 [17]
Efficiency = useful energy out / total energy in x 100
= 100/400 x 100
=0.25 x 100
= 25%

25%
6 0
3 years ago
Two plastic balls suspended by strings are placed close to each other. If they have the same charge, how will they interact with
vampirchik [111]
<span>Two plastic balls suspended by strings are placed close to each other. If they have the same charge then they will repel each other.</span>
8 0
3 years ago
Read 2 more answers
What is the difference between a data table and a graph?
alexandr402 [8]

At the same time, however, you get less detail or less precision in a chart or graph than you do in the table. Imagine the difference between a table of sales figures for a ten-year period and a line graph for that same data. You get a better sense of the overall trend in the graph but not the precise dollar amount.

3 0
3 years ago
Read 2 more answers
3.A bridge usually has expansion joints. They allow the bridge to become slightly longer when it
Dominik [7]

Answer:

a) When the sides of the joint are close together, the particles have more kinetic energy than they do when sides are farther apart.

Explanation:

5 0
3 years ago
Other questions:
  • When the flower below is rotated clockwise 90°, where will the red petal be in the image?
    13·1 answer
  • Calculate A, E, μ, cv and S for 1 mole of Kr at 298 K and 1 atm (assuming ideal behavior)
    13·1 answer
  • Find the magnitude of the electric force on a 2.0 uC charge in a 100n/C electric field.
    15·1 answer
  • You have a rock sample and analyze it for the presence of radioactive isotopes in order to determine when it was formed. You fin
    5·1 answer
  • A mass of 10 kg is at a point A on the table. It moved to a point B. If the line joining A and B is horizontal. What is the work
    12·1 answer
  • Which from the following is NOT a Renewable Energy?
    15·1 answer
  • HELP When the forces are applied in the same direction, how do you determine net force?
    8·1 answer
  • Calculate the moment of 3kg and 20cm away from the pivot​
    8·1 answer
  • Which measurement would be different if you were on the Moon versus on Earth? a mass b. weight​
    6·1 answer
  • a bird flies 25.0 m in the direction 55° east of south to its nest. the bird then flies 75.0 m in the direction 55° west of nort
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!