Answer:
22.3 work is left to be done
2.4 work are done
-- Use power when you're dealing with an amount of energy
AND the time it took. Because ...
Power =
(amount of work done or energy moved)
divided by
(time to do the work or move the energy from one place to another).
-- Use an energy equation when you have to figure out an amount of energy.
It would come up in situations like this:
. . . . . how much work is done (work is energy)
. . . . . energy needed to melt some amount of ice
. . . . . energy needed to boil some amount of water
-- Use an efficiency equation when you're dealing with
. . . . . the amount of work, or energy, or power going in
. . . . . AND the amount of work, or energy, or power coming out.
Answer:
hope you like it
Explanation:
An object that is partly, or completely, submerged experiences a greater pressure on its bottom surface than on its top surface. This causes a resultant force upwards. This force is called upthrust . The upthrust force is equal in size to the weight of the fluid displaced by the object.
Buoyancy or upthrust, is an upward force exerted by a fluid that opposes the weight of an immersed object.It is the force that pushes an object up. The upthrust, or buoyancy, keeps ships afloat. The upthrust, or buoyancy, keeps swimmers on top of the water.
Any vector can be written as components along positive X and positive Y axes.
So vector B can be written as
, where
is the angle between vector and positive X axis
So vector B = ![18*cos(112)i+18*sin(112)j=-6.74i+16.69j](https://tex.z-dn.net/?f=18%2Acos%28112%29i%2B18%2Asin%28112%29j%3D-6.74i%2B16.69j)
So components of vector B along X -axis =-6.74 m
along Y-axis = 16.69 m