Bridge Physics

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Which of the following is a purpose of expansion joints in bridges?

To improve the aesthetics of the bridge

To prevent cracks in the concrete

To increase the strength of the bridge

To allow for temperature-induced expansion and contraction (correct)

What is temperature?

A measure of the amount of heat in a system

A measure of the kinetic energy in a system

A measure of the energy of motion in a system (correct)

A measure of the thermal equilibrium of a system

What happens when there is a temperature difference between two systems?

There is no heat transfer between the systems

The systems reach thermal equilibrium

The hotter system transfers heat to the colder system (correct)

The colder system transfers heat to the hotter system

What is thermal equilibrium?

The state where two systems have the same temperature Signup and view all the answers

How does the temperature of a system change?

Through heat transfer Signup and view all the answers

Which property of a solid can change based on a change in temperature?

Length Signup and view all the answers

What is the equation used to describe linear expansion?

$\Delta L = \alpha \cdot L \cdot \Delta T$ Signup and view all the answers

What happens to the volume of a gas when the temperature is increased while holding the pressure constant?

The volume increases Signup and view all the answers

Which law states that as the pressure of a gas is increased while holding the temperature constant, the volume of the gas will decrease?

Boyle's Law Signup and view all the answers

What does the coefficient of volume expansion represent?

The tendency of a material to expand or contract with a change in temperature Signup and view all the answers

According to the ideal gas law, what is the equation that relates pressure, volume, temperature, and the number of moles of a gas?

$PV = nRT$ Signup and view all the answers

What does the symbol 'n' represent in the ideal gas law equation?

The number of moles of a gas Signup and view all the answers

What is the universal gas constant denoted by 'R' in the ideal gas law equation?

The universal gas constant Signup and view all the answers

How does the pressure of a gas change when the temperature is increased while the volume is held constant?

The pressure increases Signup and view all the answers

How many moles of air were inside the car when driving to class in the morning, given the following information: pressure = 101,325 Pascals, volume = 5 meters cubed, temperature = 285 Kelvin?

214 moles Signup and view all the answers

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