imma be a positive queen bc i feel like ppl now a days need positive thoughts in they head bc of all that is going on

Answer:

1. The type of interference happening when intersecting light waves subtract from each other to create dark spots is known as destructive interference

Destructive interference happens when the positive displacement or crest of one wave is cancelled by the negative displacement, or through of another wave of the same frequency resulting in a wave with lower amplitude

The letter on the diagram that shows destructive interference is the letter "c"

2. When particles pass translate through a key hole, they do not interfere with each. Therefore, when light is considered as a stream of particles, when it passes through a keyhole, there will be no  interference, and the light will particles will not interact with other light particles such that the pattern formed on on a wall on the other where the particles impinge on will be the shape of the single slit or keyhole

3. Three behaviors of light that support the theory that light travels in waves includes;

a) Refraction

b) Interference

c) Diffraction

Refraction

Refraction describes the change in velocity of light when it travels from one medium to another of different density, in which the light changes its speed

Interference

Interference is the superposition of two or more waves with the addition of the wave displacements resulting in a wave of larger or lesser amplitude than each of the individual waves

Diffraction

Diffraction is defined as the tendency of light to bend or spread when it goes past an object placed in its path by passing around the objects edge

4. The properties of a blackbody radiator includes;

1) A blackbody radiator absorbs all electromagnetic radiation incident on it

2) A blackbody radiator is capable of emitting black-body radiation

3) The peak of the emitted radiation depends on the blackbody temperature

4) The length of the wavelength of the peak radiation is inversely proportional to the temperature of the blackbody

5) The blackbody has zero coefficient of reflection or transmission and therefore, it does not reflect incident heat or light which makes it black

An example of a blackbody radiator is a burglar alarm that flashes light when there is an incident but cannot be ordinarily seen because of its dark color which is meant to absorb all incoming light

Explanation:

Wave interference is the phenomenon which describes the effect of the coming together or superposition of two or more waves to result in a wave displacement at a given point that is either reinforced (larger), cancelled (lower) amplitudes or the waves may have their original amplitudes when there is no interference

The wave displacement for the waves coming from the same source are taken as vectors from which the combination is calculated by using vector addition.

Answer:

The type of interference happening when intersecting light waves subtract from each other to create dark spots is called destructive interference. The letter "C" on the diagram shows this phenomenon.

If light were made of a stream of particles, it would behave by traveling in straight lines when passing through a slit or a keyhole. The particles would not spread out or bend around the edges like waves do.

Three behaviors of light that support the theory that light travels in waves are:

Reflection: Light bounces off a surface, like a mirror, following the law of reflection.

Refraction: Light bends when it passes through different mediums, like water or glass.

Diffraction: Light waves spread out and bend around obstacles, like when it passes through a narrow slit.

Characteristics of a blackbody radiator include:

It absorbs all wavelengths of light that fall on it.

It emits radiation at all wavelengths according to its temperature.

An example of a blackbody radiator is a heated metal object that glows when it reaches high temperatures, such as a red-hot iron rod.

Answer:

a luminous ball of plasma

Answer:

C

Explanation:

lightning is an electrostatic discharge

Answer:

The molecules in hot air are moving faster than the molecules in cold air.

Answer:

474 miles

Explanation:

63.2 x 7.5 = 474

Answer:

36?

Explanation:

Answer:

a. true

Explanation:

i think

that my answer

Answer:

A. overweight

Explanation:

Answer:

c

Explanation:

since of his lack of growing his body dont know what to do with the needed fat so while he's still growing its in his tummy waiting

Answer:

D is the Answer

Explanation:

I know D is the answer because I calculated it and got answer choice D

Answer:

Displacement = 20 m

Explanation:

Given that,

Kyle runs 20 m north, 20 m west and then 20 m south.

We need to find Kyles's total displacement.

Total distance = shortest path covered by Kyles.

The net displacement of Kyle is 20 m in east direction. Hence, this is the required solution.

Answer:

Answer

Advantages of alcohol over Mercury

(a) Freezing point of alcohol is −117∘

C and hence can record very low temperature For example in Arctic and Antarctic regions temperature may fall below −80∘

C which cannot be measured by mercury thermometer because mercury freezes at−39 ∘ C

(b) The expansion of alcohol per degree rise in temperature is much more around six times more then that of mercury and hence is more sensitive

(c) it can be coloured brightly by adding some dye in it and hence is easily detectable

Answer:

Potential energy

Explanation:

Answer:

1,85 m / s²

Explanation:

De la pregunta anterior, se obtuvieron los siguientes datos:

Velocidad inicial (u) = 40 km / h

Hora inicial (t₁) = 0

Tiempo final (t₂) = 6 s

Velocidad final (v) = 0

Aceleración (a) =?

A continuación, convertiremos 40 km / ha m / s. Esto se puede obtener de la siguiente manera:

1 km / h = 0,2778 m / s

Por lo tanto,

40 km / h = 40 km / h × 0,2778 m / s / 1 km / h

40 km / h = 11,11 m / s

Por tanto, 40 km / h equivalen a 11,11 m / s.

Finalmente, determinaremos la aceleración del móvil durante el período en el que desaceleró. Esto se puede obtener de la siguiente manera:

Velocidad inicial (u) = 11,11 m / s

Hora inicial (t₁) = 0

Tiempo final (t₂) = 6 s

Velocidad final (v) = 0

Aceleración (a) =?

a = (v - u) / (t₂ - t₁)

a = (0 - 11,11) / (6 - 0)

a = - 11,11 / 6

a = –1,85 m / s²

Por tanto, la aceleración del móvil durante el período en el que se ralentizó es de –1,85 m / s²

If you walked into the building with your cup of coffee at 8:00 in the morning, took a ride up and down on the elevator for fun, and then went home, then ...

When you got to the top:

...  Your distance covered  =  50 meters

...  Your displacement since you started  =  50 meters up

When you returned to the bottom:

...  Your total distance covered  =  100 meters

...  Your displacement since you started  =  zero

Answer:

If you walked into the building with your cup of coffee at 8:00 in the morning, took a ride up and down on the elevator for fun, and then went home, then ...

When you got to the top:

...  Your distance covered  =  50 meters

...  Your displacement since you started  =  50 meters up

When you returned to the bottom:

...  Your total distance covered  =  100 meters

...  Your displacement since you started  =  zero

Explanation:

Answer:

A. -30 N

Explanation:

not sure but if the box isn't moving then the force opposite of Polly would be equal to the force she's exerting.

Answer:

-30 N....(A)

Explanation:

hope this helps, the person above me is also correct

Answer:

D. The primary source, because it was written by the researcher

Explanation:

One should learn to trust the primary source more because it is the real work of the researcher.

A primary work defines the work of research from his or her experimental findings.

Answer:

what ahwhwhqqwwshwh# wvw

Explanation:

I dont think you can factor that.

Answer:

The image behind the mirror is called a virtual image because it cannot be projected onto a screen—the rays only appear to originate from a common point behind the mirror. If you walk behind the mirror, you cannot see the image, because the rays do not go there

Answer:

Ally has a harder time

ally takes more time

juan is quick

juan is more experienced

if none of those are awnser choices what are the awnser choices?

Explanation:

Answer:

If the bicycle went down the hill, because if you are at the top of the hill, that is potential energy, when you start going down, it is turned into kinetic energy. Makes sense?

Explanation:

Answer:

Explanation:

Answer:

velocity = 540m/s²

Explanation:

100cm = 1m

20cm= (20/100)m = 0.2m

velocity = 2700×0.2 = 540m/s²

Answer:

An object's velocity will only remain constant in the absence of any forces or if the forces ... The pendulum doesn't move because all the forces cancel each other out (add ... Note that an object that has a mass of one kilogram on earth would have a ... frames of animation

Explanation:

Answer:

468750 J

Explanation:

Kinetic energy = (1/2) (mass)(velocity)^2

The kinetic energy of the car with a mass of 1.5 × 10³ kg running with a speed of 25 m/s is 468750 J  .

Kinetic energy of an object is a form of energy generated by virtue of the motion of the object. Kinetic energy is dependent on the mass and velocity of the body.

When a body starts to move its potential energy starts to convert to kinetic energy and the kinetic energy will be maximum at the highest speed. When the object slow down and pause in a position it gains potential energy again.

The kinetic energy KE = 1/2 mv²

Given mass = 0.9 Kg

velocity = 4 m/s.

KE = 1/2 0.9 Kg × 4² m/s

    = 7.5 J

Therefore, the kinetic energy of the car is 7.5 J.

To find more on kinetic energy, refer here:

http://brainly.com/question/26472013

#SPJ2

Answer:

That's because cooling your body via sweating relies on a principle of physics called "heat of vaporization." It takes energy to evaporate sweat off of your skin, and that energy is heat. As your excess body heat is used to convert beads of sweat into vapor, you start to cool down.

Plugging in for the Earth's mass and for G, we have 11.2 km/s for the escape velocity for an object launched from the Earth's surface. This is about 25,000 miles per hour

Answer:

Cheetos, takis, and doritos

Explanation:

Fruit bars

Explanation:

they ate healthy and tasty. they have them at costco