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
Vesna [10]
3 years ago
8

Calculate the number of photons that would be contained in a laserpulse with a wavelength of 287 nm that contained 4.35 mJ of en

ergy. Plank's constant is 6.626 x 10-34 J•s. 2.87 x 10-7 photons 3.00 x 108 photons 1.59 x 10-16 photons 6.28 x 1015 photons 7.41 x 1012 photons
Chemistry
1 answer:
OLEGan [10]3 years ago
4 0

Answer:

3.46 ⋅ 10 − 19 J

Explanation:

The energy of a photon is proportional to its frequency,

You might be interested in
Explain why atoms move at different speeds depending on whether they are in liquid or solid
Diano4ka-milaya [45]
Because in difrent materials atoms are more compact or less compact.if they are less compact then it will be easear for them to move

8 0
4 years ago
Read 2 more answers
A magnet moved near a coil of wire can cause a(n)
Phantasy [73]
When a magnet moves near a coil of wire it can cause an A. electric current
7 0
4 years ago
Read 2 more answers
- a) write the formula unit of calcium fluoride.
san4es73 [151]

Answer:

Practice

Look at the pictures and write about Faris's day. Use time words

35words 40words * 50 words ***

TUD

Writing checkout

Olused capital letters at the beginning of sentences. Olsusea finger espace between e

the pictures (I will describe it by words)first picture the boy returns from school the sec picture is I return and eat with the family and the third picture is I played with my sister and the fourth is I watch TV with my siblings and the last picture is I take the book and study ,in order write a story using this pictures that I describe it.

6 0
3 years ago
Explain why it is important not to correct any gas from the first few seconds of the experiment​
Leno4ka [110]

Answer:

gu kha fuschhehdjdvdbeodbr

7 0
3 years ago
How many atoms are in 3 NaCl?
Assoli18 [71]

Explanation:

Sodium Chloride or NaCl is made up of two elements, sodium (or Na) and chlorine (or Cl). A molecule of sodium chloride, NaCl, consists of one atom each of sodium and chlorine. Hence, each molecule of NaCl has 2 atoms total.

5 0
3 years ago
Other questions:
  • Which of these types of technologies enable us to use the Earth's heat to produce energy?
    5·1 answer
  • Which of the following has a central atom that exceeds the octet rule? PCl5 BeF2 H2S CO2
    8·1 answer
  • The density of gold is about 19.3 g/ml. what is the mass of a 50 mL gold nugget?
    8·2 answers
  • What is the electron configuration of a potassium ion when it has formed an ionic bond with a bromine ion?
    9·2 answers
  • What were the first galaxies made of
    8·1 answer
  • What is the unit for electric current.​
    12·1 answer
  • “Representative elements”? Which groups of the periodic table contain the “representative elements”?
    13·1 answer
  • What are devices that move atomic nuclei at extremely high speed
    10·1 answer
  • Si 72g de magnesio se combinan exactamente con 48g de oxígeno para formar óxido de magnesio ¿cuantos gramos de óxido de habrán f
    6·1 answer
  • 4. Why does the metallic character of the alkaline earth metals increase as you go down the
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!