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Young's double slit experiment is one of the quintessential experiments in physics. The availability of low cost lasers in recen

ddd [48]

Answer:

Fringe width = 21 mm

Explanation:

Fringe width is given by the formula

$\beta = \frac{\Lambda L}{d}$

here we know that

$\Lambda = 564 nm$

L = 4.0 m

d = 0.108 mm

now from above formula we will have

$\beta = \frac{(564 \times 10^{-9})(4.0 m)}{0.108\times 10^{-3}}$

$\beta = 0.021 meter$

so fringe width on the wall will be 21 mm

7 0

3 years ago

What would tweezers be used for in a first-aid kit?

Alexxandr [17]

To remove a splinter from the skin.

6 0

3 years ago

Read 2 more answers

Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 1200 kg and was approaching at

GuDViN [60]

Answer:

a) v = 11.24 m / s , θ = 17.76º b) Kf / K₀ = 0.4380

Explanation:

a) This is an exercise in collisions, therefore the conservation of the moment must be used

Let's define the system as formed by the two cars, therefore the forces during the crash are internal and the moment is conserved

Recall that moment is a vector quantity so it must be kept on each axis

X axis

initial moment. Before the crash

p₀ₓ = m₁ v₁

where v₁ = -25.00 me / s

the negative sign is because it is moving west and m₁ = 900 kg

final moment. After the crash

$p_{x f}$ = (m₁ + m₂) vx

p₀ₓ = p_{x f}

m₁ v₁ = (m₁ + m₂) vₓ

vₓ = m1 / (m₁ + m₂) v₁

let's calculate

vₓ = - 900 / (900 + 1200) 25

vₓ = - 10.7 m / s

Axis y

initial moment

$p_{oy}$ = m₂ v₂

where v₂ = - 6.00 m / s

the sign indicates that it is moving to the South

final moment

p_{fy}= (m₁ + m₂) $v_{y}$

p_{oy} = p_{fy}

m₂ v₂ = (m₁ + m₂) v_{y}

v_{y} = m₂ / (m₁ + m₂) v₂

we calculate

$v_{y}$ = 1200 / (900+ 1200) 6

$v_{y}$ = - 3,428 m / s

for the velocity module we use the Pythagorean theorem

v = √ (vₓ² + v_{y}²)

v = RA (10.7²2 + 3,428²2)

v = 11.24 m / s

now let's use trigonometry to encode the angle measured in the west clockwise (negative of the x axis)

tan θ = $v_{y}$ / Vₓ

θ = tan-1 v_{y} / vₓ)

θ = tan -1 (3,428 / 10.7)

θ = 17.76º

This angle is from the west to the south, that is, in the third quadrant.

b) To search for loss of the kinetic flow, calculate the kinetic enegy and then look for its relationship

Kf = 1/2 (m1 + m2) v2

K₀ = ½ m₁ v₁² + ½ m₂ v₂²

Kf = ½ (900 + 1200) 11.24 2

Kf = 1.3265 105 J

K₀ = ½ 900 25² + ½ 1200 6²

K₀ = 2,8125 10⁵ + 2,16 10₅4

K₀ = 3.0285 105J

the wasted energy is

Kf / K₀ = 1.3265 105 / 3.0285 105

Kf / K₀ = 0.4380

this is the fraction of kinetic energy that is conserved, transforming heat and transforming potential energy

5 0

3 years ago

What is the difference between em waves and mechanical waves?

Anastaziya [24]

Answer:

Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.

Explanation:

Since electromagnetic waves do not require a medium to pass through, they are faster in matter that has fewer particles. ... ~ Sound cannot travel in a vacuum because mechanical waves, such as sound waves, require a medium to propagate through.

7 0

3 years ago

El sistema energético que importancia tiene en el cuerpo

KiRa [710]

Answer:

De un modo más claro, los sistemas energéticos son los modos que tiene el organismo para suministrar ATP a los músculos. Como decimos, en todos los esfuerzos físicos es necesario contar con la cantidad suficiente de energía y esto viene determinado por la producción de ATP, el adenosin trifosfato.

5 0

3 years ago