Buoyant force is the force that is a result from the pressure exerted by a fluid on the object. We calculate this value by using the Archimedes principle where it says that the upward buoyant force that is being exerted to a body that is immersed in the fluid is equal to the fluid's weight that the object has displaced. Buoyant force always acts opposing the direction of weight. We calculate as follows:
Fb = W
Fb = mass (acceleration due to gravity)
Fb = 64.0 kg ( 9.81 m/s^2)
Fb = 627.84 kg m/s^2
Therefore, the buoyant force that is exerted on the diver in the sea water would be 627.84 N
        
             
        
        
        
Answer:
The electric field is  and the ditection is from outer to inner side of the membrane.
  and the ditection is from outer to inner side of the membrane.
Explanation:
We know the electric field ( ) is given by
) is given by  , 'V' being the potential.
, 'V' being the potential.
In 1-D, it can be written as

where 'd' is the separation of space in between the potential difference is created.
Given,  and the thickness of the cell membrane is
 and the thickness of the cell membrane is  .
.
Therefore the created electric field through the cell membrane is 

 
        
             
        
        
        
Answer:
a).11.546J
b).2.957kW
Explanation:
Using Inertia and tangential velocity
a).


Now using Inertia an w 

average power=
b).
power=t*w
P=
P=2.957 kW
 
        
                    
             
        
        
        
The first law states that “objects at rest and objects in motion remain in motion in a straight line unless acted upon by an unbalanced force”. Keeping the ice smooth will make sure there is not friction, friction would slow the puck down