In which situation is maximum work considered to be done by a force?
o a.
the angle between the force and displacement is 180°,
ob.
the angle between the force and displacement is 90°.
oc.
the angle between the force and displacement is 60°,
od.
the angle between the force and displacement is 45°,
o e.
the angle between the force and displacement is 0°.

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation