This is the reason why the path at which a ray of light strikes a prism is different to the path after emergence from the other side. There is a refraction of light ray when the light passes from one medium to another at angle. Its speed changes. The bend is in one direction if the material it enters is denser, and other direction if less dense. The amount of bending is different because of different wavelengths.
Answer:
gravity is something that makes things go up and down
Explanation:
the motion is sensible
It is the energy of the electrons I believe
Answer:
curved
blue
light
matter
gravity
The type of stars in the areas give different colors to the galactic disk. The galactic disk appears blue because it has a large proportion of young, hot, main-sequence stars. The galactic bulge appears red because it contains many red giants and supergiants. The reddish hue of the galactic bulge indicates that new stars aren't being formed there.
Explanation:
Answer:
Mass of the box = 0.9433 kg
Explanation:
Mass of racket-ball = 0.00427 kg
Velocity of racket-ball before collision = 22.3 m/s
Velocity of racket-ball after collision with box = -11.5 m/s
[Since ball is bouncing back, so velocity is taken negative.]
Velocity of the box before collision = 0 m/s
<em>[Since the box is stationary, so velocity is taken zero]</em>
Velocity of box moving forward after collision = 1.53 m/s
To find the mas of the box .
By law of conservation of momentum we have:
Momentum before collision = Momentum after collision
This can be written as:
We can plugin the given value to find
Adding both sides by 0.4911
Dividing both sides by 1.53.
∴ kg
Mass of the box = 0.9433 kg (Answer)