A wave has a wavelength of 20 mm and a frequency of 5 Hz what is the speed?

In a double-slit experiment, the slits are illuminated by a monochromatic, coherent light source having a wavelength of 507 nm.

stira [4]

Answer:

The path difference is $2.53 \times 10^{-6}$ m

Explanation:

Given:

Wavelength of light $\lambda = 507 \times 10^{-9}$ m

Distance between slit and screen $D = 1.32$ m

Distance between two slit $d = 0.112 \times 10^{-3}$ m

Order of interference $n = 5$

From the formula of interference of light,

$d\sin \theta = n\lambda$

Where $d \sin \theta =$ path difference, $n =$ order of interference

Here we have to find path difference,

Path difference $= 5 \times 507 \times 10^{-9}$ m

Path difference $= 2.53 \times 10^{-6}$ m

Therefore, the path difference is $2.53 \times 10^{-6}$ m

5 0

2 years ago

A body is moving with an acceleration of 60 m/s^2(square).If the force applied to the body is 4200N.Calculate its mass.

Pavel [41]

Hello, for this use the <u>2nd law of Newton:</u>

F = ma

Replacing:

4200 N = m * 60 m/s^2

Resolving:

4200 N / 60 m/s^2 = m

70 kg = m

The mass is <u>70 kg</u>

8 0

2 years ago

Radio waves are the only type of electromagnetic wave that is a transverse wave.

Pavlova-9 [17]

Answer:

false

Explanation:

7 0

2 years ago

The passengers are facing forward in the direction that the train is moving. What will happen to the passengers sitting on a tra

marysya [2.9K]

Passengers which are facing forward in the direction that train is moving, their bodies will move forward in application of sudden stop of train.

<h3>What is force of inertia?</h3>

Force of inertia is the force which acts in the opposite direction of the force of acceleration acting on the body.

Given infroamtion-

The passengers are facing forward in the direction that the train is moving.

The train comes to a sudden stop.

Lets see what happens step wise-

Here, the train in moving in the forward direction and the passengers are also facing forward in the direction that the train is moving.

Now the train comes to a sudden stop. By this sudden stop the train stops suddenly but all the object including the passengers is still travelling forward due to the inertia force.

Thus all the passenger will tend to move in the direction as they are still travelling.

Hence, passengers which are facing forward in the direction that train is moving, their bodies will move forward in application of sudden stop of train.

Learn more about the force of inertia here;

brainly.com/question/10454047

6 0

2 years ago

If a 10kg block is at rest on a table and a 1200N force is applied in the eastward direction for 10 seconds, what is the acceler

gavmur [86]

Answer:

a = 120 m/s²

Explanation:

We apply Newton's second law in the x direction:

∑Fₓ = m*a Formula (1)

Known data

Where:

∑Fₓ: Algebraic sum of forces in the x direction

F: Force in Newtons (N)

m: mass (kg)

a: acceleration of the block (m/s²)

F = 1200N

m = 10 kg

Problem development

We replace the known data in formula (1)

1200 = 10*a

a = 1200/10

a = 120 m/s²

6 0

2 years ago