A tall cylinder with a cross-sectional area 13.0 cm2cm2 is partially filled with mercury; the surface of the mercury is 8.50 cmcm above the bottom of the cylinder. Water is slowly poured in on top of the mercury, and the two fluids don't mix. Part A What volume of water must be added to double the gauge pressure at the bottom of the cylinder

0.55x745.7j and a calculator

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

the rearrangement of particles in a physical change. hope this

option number c is the right answer.