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, the drag coefficient of the water droplet is 0.23 and the air density is 
.
?
water. Answer the questions below.
. If the specific weight of cold air is 
, what could be the maximum total weight of the balloon, basket, and passengers to take off?
and density 
lies in a pool at a depth of 
. Assume that water can seep under the cube.
and a mass of 
. Does the body sink or float on water?
and thickness 
is loaded with a stone. Calculate how much the stone weighs if the board is submerged in water to the top edge after loading it. The specific weight of wood is 
.
. Notice that the fish doesn’t have to wave her fins to stay at the same height.
?
. The body is half immersed in mercury, the other half is above the surface.
?
swims in the Dead Sea, he displaces 
of water. Calculate the specific weight of the water. Round the result to the nearest whole number.
.
of water when floating. How heavy is the log?
of ice. The ice is dropped into the water and it floats in the water.
floats in a lake such that one-quarter of the cube is out of the water. What is the mass of the cube?
. The specific weight of the air is 
and take 
as the average density of the human body.
. Calculate the force with which the anchor rope is tensioned if its mass is 
and its volume is 
.
weighs 
in the air. What force does the force meter show if you hang the ball on it and immerse it completely in water?
and the density of ice is 
).
, acceleration due to gravity = 
)
and the cold air around the balloon has a density of 
. What must be the volume of the balloon in order to float in the air?
and that of water is 
).
, height 
and width 
is placed in the mud at a depth of 
below the surface of a lake, as shown in the figure below. If the density of lead is 
, calculate:
, cross-sectional area 
and length 
is submerged in a liquid of 
. The upper face of the cylinder is at a depth 
below the surface of the liquid, as shown.
. Which expression gives the magnitude of the upthrust force acting on the cylinder?
, 
and 
. The block is submerged in water of uniform density so that the faces with the largest area are horizontal, as shown.
has sides of length 
. The block is immersed in a liquid of density 
. The top surface of the block is at a depth 
below the surface of the liquid.
. What is the upthrust acting on the block from the liquid?
is thoroughly mixed with an equal mass of another liquid of density 
. No change of the total volume occurs. What is the density of the liquid mixture?
