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
Vaselesa [24]
4 years ago
15

A 14N14N molecule is vibrating in its ground state with a spring constant of 2233 N m−1. What is the wavelength of the photon wh

ich excited this system to the first excited state? Use scientific notation to express your answer (X.XXE-X).
Physics
1 answer:
MariettaO [177]4 years ago
5 0

Answer:

(6.675 × 10⁶) m

Explanation:

A body vibrating in simple harmonic motion has its frequency related to the spring constant and mass of the body through the relation

f = (1/2π) √(k/m)

k = 2233 N/m

m = mass of one molecule of Nitrogen = 28.0 g = 0.028 kg

f = (1/2π) √(2233/0.028)

f = 44.945 Hz

And the photons that'll excite the molecule to the next state must at least have this frequency (f = 44.945 Hz)

For waves, the velocity (v), frequency (f) and wavelength (λ) are related through the relation

v = fλ

v = speed of light (since it's a photon) = (3 × 10⁸) m/s

λ = (v/f) = (3 × 10⁸)/44.945 = 6674824.8 m = (6.675 × 10⁶) m = (6.68 E6) m

You might be interested in
To convert 345 millimetersto meter move the decimal place to the left
Marianna [84]
.345 meters

I believe
3 0
3 years ago
Consider the electronic elements that are cooled by forced convection in Problem 6.31. The cooling system is designed and tested
Stella [2.4K]

Answer:

surface temperature of the chip located 120 mm Ts=42.5°C

surface temperature of the chip in Mexico Ts=46.9°C

Explanation:

from the energy balance equation we have to:

q=E=30W

from Newton´s law:

Ts=Tα+(q/(h*A)), where A=l^2

N=h/k=0.04*(Vl/V)^0.85*Pr^1/3

data given:

l=0.12 m

v=10 m/s

k=0.0269 W/(m*K)

Pr=0.703

Replacing:

h=0.04*(0.0269/0.12)*(10*0.12)/((16*69x10^-6))^0.85*(0.703^1/3) = 107 W/m^2*K

The surface temperature at sea level is equal to:

Ts=25+(30x10^-3/107*0.004^2)=42.5°C

h=0.04*(0.0269/0.12)*((10*0.12)/(21*81x10^-6))^0.85*(0.705^1/3)=85.32 W/(m*K)

the surface temperature at Mexico City is equal to:

Ts=25+(30x10^-3/85.32*0.004^2)=46.9°C

8 0
3 years ago
Electric field lines always begin at _______ charges (or at infinity) and end at _______ charges (or at infinity). One could als
ankoles [38]

Answer: B. (positive; negative; positive)

5 0
3 years ago
How do you calculate the number of protons, neutrons, and electrons in an atom?
schepotkina [342]
The number of protons in an atom is the same as its atomic number, which is found on its corresponding atomic symbol in the periodic table of elements. And as long as this atom has a neutral charge, than the number of electrons will be the same. If the atom does have a charge, like say, 2-, then subtract 2 from the number of protons to get the number of electrons.
For the number of neutrons, you have to memorize the isotopes available sometimes. But usually something like carbon 14 will have a total of (in this case) 14 total protons/neutrons. So subtract this number by the number of protons(6), and you have 8 neutrons.
Hope this helps!
8 0
4 years ago
Read 2 more answers
What will happen to mass and weight when you go to the moon
Art [367]
<h2>Answer: The mass will remain the same, but the weight will change </h2>

Let's start by explaining that mass and weight are very different concepts.

Mass m is the amount of matter that exists in a body, which only depends on the quantity and type of particles within it. This means mass is an intrinsic property of each body and <u>remains the same regardless of where the body is located.  </u>

On the other hand, weight W is a measure of the gravitational force acting on an object and is directly proportional to the product of the mass m of the body by the acceleration of gravity g:

W=m.g

Then, since the Earth and the Moon have different values ​​of gravity, the weight of an object in each place will vary, but its mass will not.

4 0
4 years ago
Other questions:
  • The elements least likely to form bonds are found in which group?<br> O 15<br> O 16<br> 017<br> O 18
    14·2 answers
  • The "steady state theory" suggested that the universe has always existed and maintains the same structure,
    7·1 answer
  • What is the pitch of a sound wave?
    12·1 answer
  • What is the force on a 15.5 kg ball that is falling freely due to the pull of gravity
    14·1 answer
  • A roller coaster starts from rest at the top of a drop and accelerates at a rate of 5.0 m/s2 for 2.0 sec. When it
    15·1 answer
  • What’s the value of 57,28 joules in btu?
    6·1 answer
  • Pwease hlp me (&gt;O&lt;) Darkness falls during daytime hours. Which event might have occurred?
    9·2 answers
  • Find an expression for the kinetic energy of the car at the top of the loop.Express the kinetic energy in terms of m, g, h, and
    14·1 answer
  • I just... I don't know man I suck at physics :(
    13·2 answers
  • Write the untis of following physical quantities electric current , force, frequency, density​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!