1) 6 degrees per second ( you can convert it from degrees it that's not what you're looking for)
2) .47 cm per sec
According to law of reflection, the barber should place one mirror in front of the chair and two mirrors on the left and right sides of the chair perpendicular to the front mirror. According to law of shadows, the bulb should be placed above the chair.
What is the law of refraction?
The angle of incidence is equal to the angle of reflection.
- According to the law of reflection, when two mirrors are placed parallel to each other, then infinite images are formed. So if the bulb is placed between two parallel mirrors, then there will be more light.
- By using the front mirror and the side mirrors, the person can see his hair from all sides.
What is the law of shadow?
The length of the shadow of an opaque substance on the surface decreases as the angle between the blocked light ray and the surface plane increases.
- According to the law of shadows, when the light falls on an opaque substance perpendicularly, then no shadows are formed. So hairs will be easily visible to the barber.
- So the light should be placed above the chair.
Learn more about law of reflection.
brainly.com/question/15655610
#SPJ4
It means there are two chlorine molecules and there is only one magnesium molecule (because no subscript really just means there is an invisible 1 that isn't listed).
Answer:
Iron
Explanation:
The buoyant force equals to the weight of water being displaced by the object.
Since, the volume of both iron and wood is equal and the wood is not completely submerged, but the iron block is completely submerged i.e more volume of the water is being displaced by the iron block.
Hence, the buoyant force is more on the iron.