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
aleksley [76]
2 years ago
10

It velocity of light scalar or vector equality ​

Physics
1 answer:
suter [353]2 years ago
4 0

Answer:

velocity is a vector quantity

Explanation:

velocity is a vector quantity because it has a mass and a direction

You might be interested in
The train departed 100 meters in 10 seconds How far has the train gone in the last 2 seconds
zzz [600]

Answer:

20 meters.

Explanation:

Since it went 100 meters in 10 seconds, that means it is going 10 meters per second. In 2 seconds, it must have gone 20 meters, if the speed is constant.

5 0
3 years ago
Why do the constellations seem to move around in the sky?.
Gnoma [55]

Answer: As Earth spins on its axis, we, as Earth-bound observers, spin past this background of distant stars. As Earth spins, the stars appear to move across our night sky from east to west, for the same reason that our Sun appears to “rise” in the east and “set” in the west.

Explanation:

8 0
2 years ago
A soap bubble usually pops because some part of it becomes too thin due to evaporation or drainage of fluid. The change in thick
Lapatulllka [165]

Answer:

To understand why the change in thickness also changes the color of light the bubble reflects, we definitely know that

mλ = dsinθ

when d sin θ = mλ, we expect constructive interference

d = distance between the slits

θ = the angle relative to the incident direction

m = order of the interference

Hence, a change in the thickness will also cause a change in the wavelength, and as wavelength changes, various colors are generated.

The light's path difference is therefore generated as a result of the thickness variation of the soap bubble.

Explanation:

To understand why the change in thickness also changes the color of light the bubble reflects, we definitely know that

mλ = dsinθ

when d sin θ = mλ, we expect constructive interference

d = distance between the slits

θ = the angle relative to the incident direction

m = order of the interference

Hence, a change in the thickness will also cause a change in the wavelength, and as wavelength changes, various colors are generated.

The light's path difference is therefore generated as a result of the thickness variation of the soap bubble.

5 0
3 years ago
If the work function of a material is such that red light of wavelength 700 nm just barely initiates the photoelectric effect, w
marishachu [46]

Answer:

2.13 x 10^-19 J or 0.53 eV

Explanation:

cut off wavelength, λo = 700 nm = 700 x 10^-9 m

λ = 400 nm = 400 x 10^-9 m

Use the energy equation

E = \frac{h c}{\lambda _{o}}+K

Where, K be the work function

\frac{h c}{\lambda} = \frac{h c}{\lambda _{o}}+K

K =hc\left ( \frac{1}{\lambda } -\frac{1}{\lambda _{0}}\right )

K =6.63\times 10^{-34}\times 3\times 10^{8}\left ( \frac{1}{4\times 10^{-7} } -\frac{1}{7\times 10^{-7}}\right )

K = 2.13 x 10^-19 J

K = 0.53 eV

3 0
3 years ago
An oil film (n = 1.48) of thickness 290 nm floating on water is illuminated with white light at normal incidence. What is the wa
jasenka [17]

Answer:

The correct option is  D

Explanation:

From the question we are told that

   The  refractive index of oil film is k =  1.48

   The  thickness is t =  290 \ nm  =  290*10^{-9} \ m

   

Generally for constructive interference

      2t  =  [m  + \frac{1}{2} ]*  \frac{\lambda}{k}

For reflection of a bright fringe m =  1

 =>   2 * (290*10^{-9})  =  [1  + \frac{1}{2} ]*  \frac{\lambda}{1.48}

=>     \lambda  =  5.723 *10^{-7} \  m

This wavelength fall in the range of a yellow light

8 0
3 years ago
Other questions:
  • By means of a rope whose mass is negligible, two blocks are suspended over a pulley, as the drawing shows. The pulley can be tre
    11·1 answer
  • Which term could be used to explain why someone could safely sit on a hot wooden bench but not a hot metal bench? A. Radiation B
    7·2 answers
  • The wavelength range of colors visible to humans ranges from 350 nm to 750 nm. light that most of us perceive as ________ is at
    6·1 answer
  • If Tom is losing muscle size since he took a break from exercise while he was sick, which exercise principle explains this?
    8·1 answer
  • A car of mass 500kg travelling at 60m/s has it speed reduced to 40m/s by a constant breaking force over a distance of 200m. find
    10·1 answer
  • A 220 kg crate hangs from the end of a rope of length L = 14.0 m. You push horizontally on the crate with a varying force F to m
    6·1 answer
  • a group of students working in a high school chemistry lab believe they have discovered a new element! how exciting! upon furthe
    11·1 answer
  • What are ribosomes?<br><br> I'm tired. But I have insomnia. Big ugh moment. &lt;.&lt;.
    13·1 answer
  • This player along with the point guard, are considered the leaders of the team.
    5·2 answers
  • A coconut is attached to a palm
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!