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4 years ago

Light waves have constructive interference because they are emitted _____.

1 answer:

3 0

Constructive Interference occurs when the crust of one way falls on the crust of other and the trough of one wave falls on the trough of other. This way the points of the wave re-enforce each other resulting in an increased amplitude of the wave.

Since the crust and troughs of two waves are at the same place at the same time, the waves are said to be in phase. So the correct answer to the question is option A.

Light waves have constructive interference because they are emitted In Phase

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The ability to distinguish between acceleration and velocity will be critical to your understanding of many other concepts in th

Sauron [17]

Answer:

Object could only be moving with increasing speed.

Explanation:

Let us consider the general formula of acceleration:

a = (Vf - Vi)/t

Vf = Vi + at -------- equation 1

where,

Vf = Final Velocity

Vi = Initial Velocity

a = acceleration

t = time

FOR POSITIVE ACCELERATION:

Vf = Vi + at

since, both acceleration and time are positive quantities. Hence, it means that the final velocity of the object shall be greater than the initial velocity of the object.

Vf > Vi

It clearly shows that if an object moves with positive acceleration. It could only be moving with increasing speed.

Solving the same equation for negative acceleration shows that the final velocity will be less than initial velocity and object will be moving with decreasing speed.

And for the constant velocity final and initial velocities are equal and thus, acceleration will be zero.

7 0

3 years ago

When Pluto was classified as a planet it was known as a oddball planet why? Why is it less if an oddball now?

hichkok12 [17]

Answer:

a strange world that has baffled scientists ever since it was discovered in 1930. It is not the large gas giant that one might expect to find in the outer reaches of the solar system.

Explanation:

Explanation

7 0

3 years ago

A large heavy rock, a medium size stone and a small marble are dropped at the same time from the roof of a building. Neglecting

KengaRu [80]

They would all strike the ground at the same time. If air resistance is neglected for example in an airless tube, then gravity is the only force acting on them and it has the same effect on them dropping so the drop at the same speed.

6 0

3 years ago

Read 2 more answers

A 12 kg block is released from the top of an incline that is 5.0 m long and makes an angle of 40.0º to the horizontal. A force o

Allushta [10]

Answer:

do u have a photo that comes w/ this? so i could help more :) ?

Explanation:

8 0

3 years ago

A 2.0-kg silverware drawer does not slide readily. The owner gradually pulls with more and more force, and when the applied forc

topjm [15]

Answer: 0.45

Explanation:

First note that the body that causes the body to move is its moving force (Fm) which is 9.0N

Since the mass of the body is 2.0kg, the weight will be;

W= mg = 2×10

W= 20N

For static body, the frictional force (Ff) acting on the body is equal to the moving force (Fm) since both forces acts along the horizontal on the body.

Ff = Fm = 9.0N

The normal reaction (R) on the body will also be equal to its weight(W) since weight acts downwards and the reaction acts in the opposite direction (upwards).

R = W = 20N

Ff = nR taking 'n' as coefficient of static friction between the drawer and the cabinet.

9.0 = 20n

n = 9/20

n = 0.45

7 0

3 years ago