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
GaryK [48]
2 years ago
15

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wave

length of 550 nm ? The index of refraction of the film is 1.33, and there is air on both sides of the film.
Physics
1 answer:
Firlakuza [10]2 years ago
7 0

Answer:

thinnest soap film is  206.76 nm

Explanation:

Given data

wavelength = 550 nm

index of refraction n  = 1.33

to find out

What is the thinnest soap film

solution

we have wavelength  λ = 550 nm

that is  λ = 550 × 10^{-9} m

and n = 1.3

we will find the thickness of soap film as given by formula that is

thickness = λ/2n

thickness = 550 × 10^{-9}  / 2(1.33)

thickness = 206.76 × 10^{-9}  m

thinnest soap film is  206.76 nm

You might be interested in
My older brother received a ticket for driving 80 miles per hour. This information describes my brother's
natima [27]
Your brother would be described as a speeder.
5 0
3 years ago
Read 2 more answers
What is one way that light waves differ from sound waves?(1 point)
Shalnov [3]
Light waves are transverse while sound waves are longitudinal. Light waves can travel in vacuum. Sound waves require a material medium to travel, and hence, cannot travel in vacuum. The speed of light in a medium is constant.

Hope this helps!
Please give Brainliest!
7 0
1 year ago
A 2200-kg railway freight car coasts at 4.1 m/s underneath a grain terminal, which dumps grain directly down into the freight ca
777dan777 [17]

Answer:

The answer is "2.41 \times 10^3"

Explanation:

Given:  

m_i = 2000 \ kg \\\\v_i= 4.1 \ \frac{m}{s} \\\\v_f = 3.4 \ \frac{m}{s} \\

Using formula:  

\to m_iv_i = m_fv_f \\\\\to m_f= \frac{m_iv_i}{v_f}

p_i, p_f = system initial and final linear momentum.

V_i, v_f = system original and final linear pace.

m_i = original weight of the car freight.

m_f= car's maximum weight

= \frac{ 2000 \times 4.1}{3.4}\\\\= \frac{ 8.2\times 10^3}{3.4}\\\\= 2.41 \times 10^3

\boxed{m_f = 2.41 \times 10^3}

8 0
2 years ago
The box as shown above is moving at a constant velocity . True or false
STatiana [176]
True because on side is heavier than the other
8 0
3 years ago
A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. (a) What is the batt
forsale [732]

Answer:

(a) the battery’s internal resistance is 0.4 Ω

(b) the dissipated power dissipated inside the battery is 40 W

(c) the  rate 0.096°C/min

Explanation:

Given information:

emf, ε = 12 V

voltage, V = 16 V

current, I = 10 A

mass, m = 20 kg

specific heat, c = 0.300 kcal/kg°C = 1255.8 J/kg°C

(a) What is the battery’s internal resistance?

to calculate the internal resistance, we can calculate by using the following formula

V = ε - Ir

where

V = voltage (V)

I = current (A)

r = internal resistance (Ω)

ε = emf (V)

since the battery is being charged, the current is negative, so

V = ε - (-I) r

V = ε + Ir

r = (V- ε)/I

 = (16 - 12)/10

 = 0.4 Ω

(b) What power is dissipated inside the battery?

to determine the dissipated power in the battery, use the following equation

P = I²r

where

P = power (W)

P = (10)² (0.4)

  = 40 W

(c) At what rate (in °C/min ) will its temperature increase if its mass is 20.0 kg and it has a specific heat of 0.300kcal/kg⋅°C , assuming no heat escapes

to find the rate of temperature increase by

Q = m c ΔT

where

Q = thermal energy (J)

c = specific heat (J/kg°C)

ΔT = the change of temperature

to find the energy, we use

E = Pt

the energy is converted in one minute

E = 40 x 60

  = 2400 J

thus,

2400 = 20 x 1255.8 x ΔT

ΔT = 2400/(20 x 1255.8)

     = 0.096°C/min

3 0
3 years ago
Other questions:
  • Which best describes the history of scientific knowledge?
    14·1 answer
  • 20. Threshold braking in the vehicle's braking system
    9·1 answer
  • Hydraulic systems utilize Pascal's principle by transmitting pressure from one cylinder (called the primary) to another (called
    7·1 answer
  • Jason launches a model rocket with a mass of 2.0 kg from his spring-powered rocket launcher with a spring constant of 800 N/m. H
    8·1 answer
  • wo small containers have a mass of 2.6 g each; one contains 2.4 g of water, the other 1.8 g of alcohol. If the alcohol is poured
    14·1 answer
  • The waves in the pool where you are floating have a crest height of about 1 foot. Bobby does a cannonball dive off the side of t
    8·1 answer
  • Which of the graphs describes the motion of a person who first rode her bicycle at constant speed and then rested?
    10·1 answer
  • Radio waves have a longer wavelength than microwaves. What else is true<br> about radio waves?
    15·1 answer
  • A bird of mass 1.5 kg is flying at 8 m/s at a height of 50 m above the ground. What is its
    14·1 answer
  • If Weight=mg and Force=ma, and the only force acting on an object is gravity, then the masses cancel each other out and you are
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!