Answer:
The volume of the submerged part of her body is ![0.0622m^{3}](https://tex.z-dn.net/?f=0.0622m%5E%7B3%7D)
Explanation:
Let's define the buoyant force acting on a submerged object.
In a submerged object acts a buoyant force which can be calculated as :
ρ.V.g
Where ''B'' is the buoyant force
Where ''ρ'' is the density of the fluid
Where ''V'' is the submerged volume of the object
Where ''g'' is the acceleration due to gravity
Because the girl is floating we can state that the weight of the girl is equal to the buoyant force.
We can write :
(I)
Where ''W'' is weight
⇒ If we consider ρ =
(water density) and
and replacing this values in the equation (I) ⇒
![B=W_{girl}](https://tex.z-dn.net/?f=B%3DW_%7Bgirl%7D)
![B=610N](https://tex.z-dn.net/?f=B%3D610N)
ρ.V.g = 610N
(II)
The force unit ''N'' (Newton) is defined as
![N=kg.\frac{m}{s^{2}}](https://tex.z-dn.net/?f=N%3Dkg.%5Cfrac%7Bm%7D%7Bs%5E%7B2%7D%7D)
Using this in the equation (II) :
![(9810\frac{N}{m^{3}}).V =610N](https://tex.z-dn.net/?f=%289810%5Cfrac%7BN%7D%7Bm%5E%7B3%7D%7D%29.V%20%3D610N)
![V=\frac{610N}{9810\frac{N}{m^{3}}}](https://tex.z-dn.net/?f=V%3D%5Cfrac%7B610N%7D%7B9810%5Cfrac%7BN%7D%7Bm%5E%7B3%7D%7D%7D)
![V=0.0622m^{3}](https://tex.z-dn.net/?f=V%3D0.0622m%5E%7B3%7D)
We find that the volume of the submerged part of her body is ![0.0622m^{3}](https://tex.z-dn.net/?f=0.0622m%5E%7B3%7D)
Friction is caused by the uneven surfaces of touching objects
Answer:
On Edg 2021, the answer was "B = The moon's orbital period and distance from Earth"
Explanation:
I hope this is correct for you, if it isn't I am very sorry. Good luck! :)
Answer:
The wooden floor exerts a greater force to give the same impulse as a padded mat.
Explanation:
-The wooden floor exerts a greater force for the same impulse as the padded mat.
-Unlike the wooded floor, the padded mat absorbs some of the energy when you fall. This in turn makes it exert less force on the body during the fall.
-Hence, you are less hurt when you fall on the padded floor.
Rainy. Most crashes/fatal collisions in adverse weather or on slick pavement