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
ki77a [65]
3 years ago
12

20. I am a noble gas with 2 electrons.

Physics
1 answer:
madam [21]3 years ago
8 0

Answer:

20.helium

21.silicon

hope this helps :)

You might be interested in
What causes thunder?
LUCKY_DIMON [66]
I believe the answer is B.
4 0
3 years ago
What environmental factors affect sound?
Mariana [72]

Answer:

Here are 5:

Distance from source to receiver

Wind speed and direction

Wind gradients

Temperature gradients

Atmospheric attenuation

and there are many more...

Hope that was helpful.Thank you!!!

7 0
3 years ago
Which of these descriptions best defines the solar system?
Marrrta [24]

Answer:

d

Explanation:

d because the sun is in the center and everything else surrounds it

5 0
2 years ago
How does an inclined plane change distance and how does it change direction
ElenaW [278]
 Objects are known to go down because of a unbalanced force
7 0
2 years ago
What's the frequency of a wave with a wavelength of 10 and velocity of 200m/s?
uranmaximum [27]

Answer:

\boxed {\boxed {\sf 20 \ Hz}}

Explanation:

The frequency of a wave can be found using the following formula.

f=\frac{v}{\lambda}

where <em>f</em> is the frequency, <em>v</em> is the velocity/wave speed, and λ is the wavelength.

The wavelength is 10 meters and the velocity is 200 meters per second.

  • 1 m/s can also be written as 1 m*s^-1

Therefore:

v= 200 \ m*s^{-1} \\\lambda = 10 \ m

Substitute the values into the formula.

f=\frac{200 \ m*s^{-1}}{10 \ m}

Divide and note that the meters (m) will cancel each other out.

f=\frac{200 \ s^{-1}}{10 \ }

f=20 \ s^{-1}

  • 1 s^-1 is equal to Hertz
  • Therefore, our answer of 20 s^-1 is equal to 20 Hz

f= 20 \ Hz

The frequency of the wave is <u>20 Hertz</u>

7 0
2 years ago
Other questions:
  • true or false? Heather and Matthew walk with an average velocity of .75 m/s eastward. If it takes them 25 min to walk to the par
    7·1 answer
  • Plants in the desert, such as the yucca tree below, tend to have very wide root structures. Some yucca tree roots have been know
    8·2 answers
  • What is the maximum speed with which a 1200-kg car can round a turn of radius 90.0 m on a flat road if the coefficient of fricti
    8·1 answer
  • Nearly all the light that strikes an opaque object will pass through and cast a shadow
    14·2 answers
  • A force of 30 N is applied tangentially to the rim of a solid disk of radius 0.14 m. The disk rotates about an axis through its
    8·1 answer
  • Stretching is important prior to physical activity and a few hours after/the next day after. What does stretching accomplish whi
    11·1 answer
  • Which type of earthquake waves travel out in all directions from the focus, the point in the crust where the earthquake occurred
    7·1 answer
  • You are trying to tune the fifth string on your guitar, which is supposed to sound the A2 note (i.e., a note two octaves below A
    10·1 answer
  • What are the issues that hinders efforts to achieve sustainability?
    5·1 answer
  • Can you please solve this for me urgently want to make sure if my answers are correct?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!