They do not have a constant volume or shape; they not only take the shape of the container they are in, they try to fill the entire container.

It is a state of matter consisting of partially ionized gas

A phase change from solid to liquid

A phase change from solid directly into gas

A phase change from gas to liquid

A phase change from plasma to gas

Air can be considered a fluid.

Fluids can only either be a liquid or a gas.

The pressure you exerted on a surface is equal to your mass divided by the surface area of your feet in contact with the surface.

The pressure increases as the surface area of contact increases.

Pressure is directly proportional to the applied force

Which of the following is not a unit of pressure?

Which of the following is TRUE about absolute pressure?

It states that when force is applied to a confined, incompressible fluid, the pressure increases equally in all directions throughout the fluid.

The following can be done to increase the pressure exerted by the gas EXCEPT

It refers to the pressure exerted by a fluid (gas or liquid) at any point in space within that fluid, assuming that the fluid is incompressible and at rest.

The pressure within a liquid is independent on the

The pressure exerted by a static liquid increases linearly with increasing depth.

The pressure exerted by the atmosphere increases with increasing altitude.

It is the upward force exerted by the fluid which is equal to the weight of the fluid displaced by the object.

Considering the air pressure inside a tire, which of the following has the highest value?

The pressure at sea level under standard conditions is

A. 1 atm B. 101.325 kPa

Mercury is the only liquid that can be used for hydrostatic barometers.

This type of barometer consists of a small flexible sealed metal box which expands or contracts with small changes in external air pressure.

The reduction of the effective blood vessel cross-sectional area which may be due to plaque build-up from high cholesterol results in an increase in blood pressure to restore normal blood flow according to Poisseuille’s Law.

The buoyancy force always points downwards because the pressure of a fluid increases with depth.

The buoyant force exerted by a fluid opposes the weight of an immersed object.

Archimedes principle states that the buoyant force exerted on a body immersed in a fluid is equal to the weight of the body immersed in a fluid.

Archimedes principle is valid only for liquids.

The greater the density of the fluid, the greater the buoyant force that can be experienced by an immersed object on that fluid.

The buoyant force experienced by a completely immersed object increases with increasing depth.

The mass of the displaced fluid is equal to its density divided by its volume

An object will float if the buoyancy force exerted on it by the fluid is

An object will sink if the buoyancy force exerted on it by the fluid is

What happens to a fully submerged object in a fluid with density greater than that of the object?

If the density of the fluid is twice the density of an object, what will be the fraction of the object that will be submerged in that fluid

The continuity equation applies to all fluids.

For an incompressible fluid, the volumetric flow rate will be halved if the pipe cross-sectional area is reduced to half.

For an incompressible fluid, its velocity will increase if the pipe diameter is increased.

Which statement best describes the continuity equation for fluids?

It states that the sum of mechanical energy, potential energy and kinetic energy, along a streamline is constant.

What happens to the velocity of an incompressible fluid that is pumped and passes thru a uniform pipe to a higher elevation?

Which of the following is/are assumption/s in Torrecelli's theorem?

Assuming an ideal flow, what happens to the pressure if there has been an increase in the cross-sectional area of a horizontal pipeline?

Assuming there is an ideal flow, what happens to the pressure if there has been an increase in the elevation of a uniform pipeline?

Assuming there is an ideal flow, what happens to the pressure if there has been a change in pipe size and elevation along a pipeline?

In Torrecelli's law, the potential energy at the top of a reservoir will be equal to the kinetic energy at exit hole

It is the pressure at a given point in the fluid.

If you have a bottle filled with water and will have holes near the top, at the center, and another near the bottom, at which hole will have higher exit velocity for the water?

Thermal expansion is the tendency of matter to change in volume in response to a change in temperature.

The change in length measurements of an object due to thermal expansion is related to temperature change by a

The linear expansion coefficient is as an approximation over a wide range of temperature

All materials expand with increasing temperature.

What do you call the substances that expand at the same rate in every direction?

For the linear expansion, the formula is ΔL = L_oαΔT. Derive an equation for α

For the linear expansion, the formula is ΔL = L_oαΔT. What can be the unit for α

Jodie can’t remove her wedding ring. If she runs the entire ring under hot water, the hole in the middle will

The solid form of most substances is denser than the liquid phase.

During phase change there is an increase in the potential and kinetic energies

Adding heat during phase change does not result in a change in temperature.

Heat is always added during phase change.

It is the fraction of water vapor in a gas compared to the saturation value.

It states that systems in thermal equilibrium are at the same temperature.

In Zeroth Law of Thermodynamics, assuming A, B, and C are three systems, if A and C are in thermal equilibrium, and A and B are in thermal equilibrium, then B and C are not necessarily in thermal equilibrium.

Heat may still flow between two objects that do not touch.

Heat is a measurable form of energy that can be transferred from one body to another which may be treated as a substance.

It is the science of measuring the heat absorbed or evolved during the course of a chemical reaction or change of state.

What could be an indication if heat is transferred?

A mode of heat transfer by the macroscopic movement of a fluid.

This mode of heat transfer occurs when microwaves, infrared radiation, visible light, or another form of electromagnetic radiation is emitted or absorbed.

You may feel the heat from fire along its side through

If two objects at different temperature are brought together, energy will transfer from the hotter object to the cooler one and vice versa until both are at the same temperature.

Objects of different masses with same temperature has the same average kinetic energy but with different amount of heat

What is the SI unit of heat?

The rate of heat transfer by conduction is given by H = kAΔT/L. What could be the unit for k?

A negative Q (heat) means

Internal energy does not depend on the size of the system or on the amount of substance it contains.

Which of the following is an intensive property?

It is a system that does not interact with its surroundings.

It measures the amount of heat necessary to raise the temperature of an object or system by one degree Celsius

The transferred heat is directly proportional to the following except

The higher the specific heat of a substance, the higher the amount of heat needed to raise the temperature of that substance.

It is a type of calorimeter that is used to measure the energy produced by reactions that yield large amounts of heat and gaseous products, such as combustion reactions.

Which of the following is an example of a constant-pressure calorimeter

It is the energy associated with a phase change of a substance.

For a phase change to happen, energy must always be added to the system

It is the energy required to transition one unit of a substance from solid to liquid; equivalently, the energy liberated when one unit of a substance transitions from liquid to solid.

During a phase change, the temperature remains constant

A process where energy is released is called

The latent heat depends on the mass or amount of the substance.

The reason why fluids and gases are not good conductors of heat is due to the large distance between atoms in a fluid or a gas.