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
mafiozo [28]
3 years ago
7

2. Jessie studies seaweed and she usually takes large amounts of samples. She would take

Physics
1 answer:
Leni [432]3 years ago
7 0

Answer:

a

Explanation:

You might be interested in
What is the frequency of an x- ray if the wavelength is 4.5 E - 10m?
AnnZ [28]
V (speed) = F (frequency) x Wavelength
If we rearrange the formula, making frequency the subject;
F (frequency) = Speed ÷ Wavelength
F = 300,000 m\s x 4.5 e -10m
F = 0.08810409956 Hz
4 0
3 years ago
Can you help me with this??
s2008m [1.1K]

Answer:

i want to say flip the coins but im not really sure sry

Explanation:

3 0
3 years ago
The nucleus of an atom is composed of unchanged particles as well as of the following
Ivan
I suppose that you wanted write "uncharged". The particles without electrical charge present in the nucleus are called neutrons.
7 0
3 years ago
WILL UPVOTE EVERY ANSWER! MULTIPLE CHOICE QUESTION!
Nitella [24]
B hardness

Giddy UP!!!!!
4 0
3 years ago
g Calculate the maximum wavelength of light that will cause the photoelectric effect for potassium. Potassium has work function
Ivahew [28]

Answer:

λ = 5.4196 10⁻⁷m,  λ = 541.96 nm    this is green ligh

Explanation:

The photoelectric effect was explained by Eintein assuming that the light was made up of particles called photons and these collided with the electrons taking them out of the material.

 

                     K = h f -Ф

where K is the kinetic energy of the ejected electrons, hf is the energy of the light quanta and fi is the work function of the material.

The speed of light is related to wavelength and frequency

                   c = λ / f

                  f = c /λ

we substitute

                K = h c / λ - Φ

for the case that they ask us the kinetic energy of the electons is zero (K = 0)

                 h c / λ = Ф

                λ = h c / Ф

we calculate

                 λ = 6.63 10⁻³⁴  3 10⁸ / 3.67 10⁻¹⁸

                 λ = 5.4196 10⁻⁷m

let's take nm

                lam = 541.96 nm

this is green light

4 0
3 years ago
Other questions:
  • Momentum has the same direction as ______.
    15·1 answer
  • In the classic horse and cart problem, a horse is attached to a cart that can roll along on a set of wheels. Which of the follow
    15·1 answer
  • Question is in the picture
    12·1 answer
  • What kind of charge does an object have if it has gained electrons
    11·2 answers
  • What outside force prevents the planets from moving in a straight line into space
    15·2 answers
  • A pulley has an initial angular speed of 12.5 rad/s and a constant angular acceleration of 3.41 rad/s2. Through what angle does
    14·1 answer
  • What is light? Makes thing visible?
    7·1 answer
  • Which formula can be used to find the angle of the resultant vector has
    11·1 answer
  • Part 4: Place the following in order
    5·1 answer
  • a ball is thrown upward with initial velocity of 20 m/s. (a) how long is the ball in the air? (b) what is the greatest height re
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!