Fluid Dynamics

Different shapes result in different resistances (force opposing gravity) on the object as it falls. An object will continue to accelerate as it falls, until the gravitational force is equivalent to this resistance. This is known as "Terminal Velocity." The lower the resistance is, the higher the resulting speed will be before this equilibrium is reached.

An object with a large surface area or volume (high wind resistance value) and low density (low gravitational force) will fall slower than an object that has a lower surface area (low wind resistance) with a higher density (high gravitational force).

e.g., A large hollow Styrofoam ball will fall much slower than a metal dart.

Rotocopters work by spinning rotor blades to generate lift. The weight of the rotocopter is supported by this lift force, which must be greater than the weight for the rotocopter to stay airborne. Drag is generated as the rotocopter moves through the air, which must be overcome by thrust generated by the rotor blades to maintain forward motion.

three types of combustion chamber are used in gas turbine engine

1) Can type.

1.1 single can ; this again can be of two type a) straight through design b)reverse flow design

1.2 multiple can

2) tubo-annular (can-annular)

3) annular

Intra-alveolar surface tension is due to the presence of surfactant molecules that reduce surface tension within the alveoli, preventing lung collapse by maintaining alveolar stability during breathing. Surfactant helps to reduce the work of breathing and facilitates gas exchange by preventing alveolar collapse at the end of expiration.

Intermediate interference refers to interference that occurs when a new memory interferes with the retrieval of an older memory, or when an older memory interferes with the retrieval of a more recent memory. This type of interference often occurs when similar information is involved, making it difficult to distinguish between the memories.

No, if the pressure difference results in a density change of less than thirty percent (30%) the fluid may be treated as incompressible by assuming the density of the fluid equals the average density and that the density is constant.

Source: Chemical Engineering Fluid Mechanics, Ron Darby, 2nd edition, page 115.

Water is effectively an incompressible substance, so pressure does not affect its' volume. However, its boiling and freezing points are directly related to the external pressure. Water boils when its vapor pressure is equal to the external pressure (or the atmospheric pressure if it is contained in some uncovered pot). Greater external pressure requires higher temperature for water so as to have that value of vapor pressure for it to boil. This is how pressure affects water.

Hence the diver must spin faster when moment of inertia become smaller to conserve angular momentum. In this way the diver can make more somersaults before entering the water.

Related To Chapter CIRCULAR MOTION

The power required by a reciprocating pump is directly proportional to the discharge it produces. When the discharge increases, the power needed to maintain that flow rate also increases. This relationship is governed by the pump efficiency and the pressure head against which the pump is operating.

In fluid dynamics, a common example of using finite difference method is the discretization of the Navier-Stokes equations to solve for fluid flow equations. This entails approximating spatial derivatives with finite differences on a grid, which allows for numerical simulation of the fluid behavior in a computational domain.

Yes, when helium is in its superfluid state, it can conduct electricity with extremely low resistance due to its unique properties like zero viscosity and infinite thermal conductivity. This allows electricity to flow nearly friction-free, making it an ideal medium for certain applications like superconducting circuits and sensors.

A thermometer measures the amount of thermal energy a material has. This thermal energy is related to the vibrational and rotational energy the particles in the material have.

By using the thermometer to measure the temperature of a material you are, in effect, measuring the amount of energy the particles of that material have.

The height ( h ) of the object at time ( t ) can be modeled by the equation ( h(t) = -4.9t^2 + 5t ), where ( t ) is the time in seconds. This equation represents the object's height over time while it reaches its highest point at 2 meters after 0.5 seconds, then falls back down due to gravity.

The minimum volume of the ice slab would need to displace at least 45.0 kg of water to support the woman's weight without sinking. Given that freshwater has a density of approximately 1000 kg/m^3, the minimum volume can be calculated as 0.045 m^3 (45.0 kg / 1000 kg/m^3).

hair dryer, electrical energy enters the hair dryer and is converted to kinetic energy as a small motor spins a fan blade the electrical energy is converted to thermal by a grind of wires that heat up

A person who studies dynamics is typically called a "dynamics researcher" or a "dynamics scientist." Their specific area of study may be more specialized, such as a "mechanical engineer" if they focus on mechanical dynamics or a "fluid dynamics researcher" if they study the dynamics of fluids.

One example of an extrusion is the process of creating metal rails or bars by forcing raw metal through a shaped die to produce a continuous profile.

Motor oil heats faster than water, as water has one of the highest specific heat capacities. (It takes more energy to increase the temperature of 1 kg of water by 1 °C than to increase the temperature of 1 kg of oil by 1°C)

powder IS solid.

However, if you wanna make it into a larger chunk again, there are several ways. One is to melt it, then cool it, and you will have solid. However, you could dissolve it into other solutions, and then evaporate that solution, to form larger chunks, etc. =)

It is not so much the temperature of the water but the pressure that the hot water produces. If you will look at almost any car radiator cap you will notice a warning that says something to the effect
'warning contents under pressure. Do not remove when hot.'

Characteristics of an ideal gas:
- an extremely low concentration
- molecules are in a permanent motion
- Newton laws can be applied
- all collisions are elastic
- molecules are spherical
- molecules are not compressible

Air pressure decreases with increase of height.