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3 years ago

Light travels in a straight line at a constant speed of 300 000 km/s what is the lights acceleration

Physics

1 answer:

exis [7]3 years ago

3 0

Answer:

it's acceleration is 0

Explanation:

since it is travelling at a constant speed it is not accelerating so its acceleration is 0

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1. What kind of light phenomena happen due to the refraction of light upon hitting the small crystals that make up cirrus or cir

Rama09 [41]

1. The light phenomena happen due to the refraction of light upon hitting the small crystals that make up cirrus or cirrostratus clouds is called Sundogs.

2.A light phenomena which are formed when light passes through clouds and strikes the ice crystals in them is called Halos.

3.A light phenomenon formed from the combination of several light properties like refraction, reflection, and dispersion is Rainbow.

4. Rainbow are created after a rain shower and Sun light.

5. A visible accumulations of tiny water droplets or ice crystals.

in the Earth’s atmosphere are called Clouds.

6. There are seven colors in a rainbow.

7. The kind of rainbows are formed when light strikes small raindrops with almost the same size are Supernumerary rainbows.

8.The kind of rainbows are formed when two inner reflections are done instead of one; this causes the reversal of colors in a secondary rainbow in comparison to a primary rainbow are Secondary rainbows.

9. A reflective surface that is curved inward and away from the light source is concave mirror.

10. The kind of mirror are curved outward like the bottom

of a spoon is convex mirror.

<h3>What is reflection?</h3>

When a light strikes on a shiny surface, it reflects back the light ray in the same medium. The phenomenon is called reflection and the ray is called the reflected ray.

Thus, all the questions are answered.

Learn more about reflection.

brainly.com/question/2254222

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8 0

1 year ago

The force needed to move an object 14 meters with 83 joules of work is what?

AleksandrR [38]

W=F*D
83J=F*14
83/14=F
5.92N

8 0

3 years ago

positively charged ebonite rod is brought close to a small ball. The rod does not touch the ball, which is made from a conductin

xxMikexx [17]

Answer:

The rod attracts the ball

Explanation:

5 0

3 years ago

A boy runs 40m towards east. he then walks 30m towards north. The boy again runs 50m towards north making an angle of 30° with e

Katena32 [7]

Answer: The displacement is 99.82 meters.

Explanation:

To use a standard notation, we can define:

North as the positive y-axis.

East as the positive x-axis.

If the initial position of the boy is (0, 0)

Then:

"runs 40m towars the east"

The new position is (0, 0) + (40m, 0) = (40m, 0)

"he then walks 30m towards North"

The new position is: (40m, 0) + (0, 30m) = (40m, 30m)

"The boy again runs 50m towards north making an angle of 30° with East."

By making a triangle rectangle, we can find the x and y components for this motion.

Y-component = 50m*cos(30°) = 43.3m

X-component = 50m*sin(30°) = 25m

Then the new position will be:

(40m, 30m) + (43.3m, 25m) = (83.3m, 55m)

Now we want to find the total displacement, this will be equal to the distance between the final position and the initial position.

The distance between two points (ax, ay) and (bx, by) is:

D = √( (ax - bx)^2 + (ay - by)^2)

In this case we want to find the distance between the points (83.3m, 55m) and (0, 0), this will be:

D = √( (83.3m - 0)^2 + (55m - 0)^2) = 99.82 m

The displacement is 99.82 meters.

5 0

2 years ago

- What is the total distance traveled by the car

slega [8]

*Graph is attached with the answer*

Answer:

Total distance traveled by the car is 40 m

Explanation:

It can be seen from the graph that for the first 4 second car is moving with uniform acceleration and for next 2 second it has constant velocity

So, we solved this question in 2 parts

Part 1:

initial velocity = v₁ = 0 m/s

final velocity = v₂ = 10 m/s

time = t = 4 s

acceleration = a = (v₂ - v₁)/t

a = 10/4 = 2.5 m/s²

Using 3rd equation of motion

2as = v₂² - v₁²

2(2.5)s = 10²

s₁ = 100/5

s₁ = 20 m

Part 2:

s₂ = v₂t

s₂ = 10 × 2

s₂ = 20 m

Total distance = S = s₁ + s₂

= 20 + 20

S = 40 m

7 0

3 years ago