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
Svetradugi [14.3K]
3 years ago
10

What is the wavelength of an ekectromagnetic wave that has a frequency of 40,000 hz? the speed of light is 3x10^8 m/s?

Physics
1 answer:
ehidna [41]3 years ago
7 0
Solution
As,
speed=frequency × wavelengths
so,
wavelength=speed/frequency
=3×10^8/40000
=7500m
You might be interested in
An object of the same mass has three different weights at different times.
Sindrei [870]

Answer:

See below

Explanation:

Possible.....mass is the amount of matter an object has ....weight is the result of gravity on an object.... different gravity ( Earth , Moon or Mars etc)

results in different weights .

5 0
1 year ago
7. A bicycle accelerates at 2.0 m/s2. If the mass of the bicycle and rider together is
kkurt [141]

Answer:

170 N

Explanation:

Since Force F = ma were m = mass = 85 kg and a = acceleration = 2.0 m/s².

So the net force on the bicycle is

F = ma = 85 kg × 2.0 m/s² = 170 N

4 0
3 years ago
how many atoms of oxygen are there in one molecule of cardon dioxide , if the chemical formula is CO2
garri49 [273]

Answer:

2 oxygen 1 carbon

Explanation:

8 0
3 years ago
Read 2 more answers
A worker pushes horizontally on a large crate with a force of 265.0 N and the crate moved 4.3 m. How much work was done?
trapecia [35]

Answer:

<h2>1139.5 J</h2>

Explanation:

The work done by an object can be found by using the formula

workdone = force × distance

From the question we have

work done = 265 × 4.3 = 1139.5

We have the final answer as

<h3>1139.5 J</h3>

Hope this helps you

8 0
2 years ago
Which of the following to all food chains depend on in an ecosystem
Gre4nikov [31]

Answer:

The sun is the ultimate source of energy for all food chains. Through the process of photosynthesis, plants use light energy from the sun to make food energy. Energy flows, or is transferred through the system as one organism consumes another.

8 0
3 years ago
Other questions:
  • In two grams of element x combine with 4 grams of element y to form compound xy how many grams of element why would combined wit
    13·1 answer
  • You lower a 2.50 kg textbook (remember when textbooks used to be made out of paper instead of being digital?) from a height of 1
    5·1 answer
  • In a circuit, electrons flow from _____ terminal to the ____ terminal.​
    9·1 answer
  • How many magnitude 8 earthquakes does it take to equal the energy release for a magnitude 9 earthquake?
    14·1 answer
  • An outfielder throws a 1.1 kg baseball at a speed of 62 m/s and an initial angle of 12.3 ◦ . What is the kinetic energy of the b
    7·1 answer
  • A swimmer standing near the edge of a lake notices a cork bobbing in the water. While watching for one minute, she notices the c
    10·1 answer
  • Which of the following describes the flow of charges through a wire or a conductor?
    15·1 answer
  • 50 points for any help on these 3 physics problems!!!!
    5·1 answer
  • Sound waves are described as a.) mechanical and transverse b.) mechanical and longitudinal c.) electromagnetic and transverse or
    15·1 answer
  • 1- what is a machine?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!