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yarga [219]
3 years ago
15

WILL MARK THE BRAINLIEST pls help

Physics
2 answers:
Hatshy [7]3 years ago
7 0

Answer: i think both mirrors are used to reflect the beam of light.

Explanation:

gr 10 science right? im almost done the semester and i learnt this already so i think the best answer is the last one

il63 [147K]3 years ago
3 0

Answer:

I think B but im not sure

Explanation:

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An object's weight is equal to its buoyant force in water. What would you expect to happen when the object is placed in water? E
barxatty [35]

Answer:

It will keep floating on the surface with a part of the body inside the liquid and a part outside it.

Explanation:

The Archimedes principle is the physical principle that states: a body totally or partially submerged in a fluid at rest, experiences an upward vertical thrust equal to the weight of the volume of fluid dislodged by the body. This force 1 is called hydrostatic thrust or Archimedes, and is measured in Newtons (in the SI). The Archimedes principle is formulated as follows:

flotation force  = liquid density  × force of gravity  × volume of liquid dislodged

Therefore in this case when placing a body in water whose weight is equal to the buoyant force, it will float in equilibrium on the surface of the liquid, since the volume of liquid that it displaces is equal to the weight of the body and this force of below upwards it keeps it on the surface with a part of the body inside the liquid and a force part of it. This is because only the volume of the necessary object is submerged to move the liquid corresponding to a buoyant force equal to its own weight.

4 0
3 years ago
The kinetic energy of a book on a shelf is equal to the work done to lift the book to the shelf. t/f
Svet_ta [14]
The kinetic energy of a book on a shelf is equal to the work done to lift the book to the shelf is false. The kinetic energy on the shelf is zero because it is not in action.
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When a certain amount of heat is supplied to 1KG of insulated aluminium. The temperature of the aluminium rises by 1°C
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Aluminium has higher thermal capacity than water

Explanation:

who believes me ......... more ......

Anybody don't know hey

6 0
3 years ago
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What are the four most common gases in dry air?
dimaraw [331]
Nitrogen
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Please help! Will mark best answer!!
MA_775_DIABLO [31]
The answer is (A) hope it helps 
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