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3 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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A coconut is attached to a palm

kicyunya [14]

Answer:

1.22kg

Explanation:

info given:

height (h) = 7.25m

g = 9.81m/s^2

PE = mgh

Plug in info and solve for m.

m(9.81m/s^2)(7.25m) = 87.4J

m = 1.22kg

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2 years ago

What is the formula of Kinetic Energy

Andre45 [30]

K.E = ½ mv²

Explanation:

The formula of Kinetic Energy

K.E = ½ mv²

Where,

m = mass of object

v = velocity of object

The Standard Unit of kinetic energy is Joule, while the Imperial Unit of kinetic energy is foot-pound

-TheUnknownScientist

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2 years ago

Read 2 more answers

How is constant acceleration indicated on a motion map? by vectors that slowly increase in length by vectors that are all the sa

Nastasia [14]

D.by dots that are all the same length
Hope this helped!

6 0

3 years ago

When different resistors are connected in parallel across an ideal battery, we can be certain that: a) their equivalent resistan

sergeinik [125]

Answer:

b) the potential difference across each is the same.

Explanation:

When resistors are connected in parallel with each other

then the terminals of all the resistors will connected across the terminals of the battery

So we know the potential difference of the battery is same across all the resistors

So we can say that the equivalent resistance of all the resistance is

$\frac{1}{R} = \frac{1}{R_1} + \frac{1}{R_2} + \frac{1}{R_3}$

so its not the mean of all resistors

also we know that the resistance are all different so power across each resistance is different given as

$P = \frac{V^2}{R}$

also current in each resistance is also different and given by

$i = \frac{V}{R}$

so correct answer will be

b) the potential difference across each is the same.

5 0

2 years ago

In a collision an object experiences impulses , this impulse can be determined by

astraxan [27]

In a collision an object experiences impulses, this impulse can be determined by the product of net force exerted upon it in the specific course of time.

Explanation:

An object experiences impulse due to the force exerted upon it in a particular time period.

i.e.

$\text {Impulse }=F \times \Delta t$

Where,

F - Force acted upon the object

$\Delta t$ - time interval for which the force act

According to the definition of Impulse, it is the integral of force (F) that acts upon any object over a time interval ∆t. It produces an equivalent change in the momentum and that too in the same direction as of the applied force (F).

Therefore, in order to find the impulse on an object, we have to find the force acted on it in a specific time interval.

8 0

2 years ago