Physics C1 - Thermal physics in domestic and industrial applications

From textbook, not completed

What does SI unit stand for?

Système Internationale (International System of Units)

What does SI mean?

The modern, globally agreed metric system used across science and daily life

What is the unit for energy?

Joule (J)

What is the unit for power?

Watt (W)

What does kilowatt (kW) =

1000 Watt

What does megawatt (MW) =

10^6 Watt

What does gigawatt (GW) =

10^9 Watt

What does 1 Watt =

1 Joule per second ( J s^-1)

What does K stand for in temperature?

Kelvin

How to convert °C to K?

K = °C + 273.15

How to convert K to °C ?

°C = K - 273.15

Why is it added or minus 273.15?

Because this is the freezing point of water on the Kelvin scale

What is absolute temperature also known as?

Thermodynamic temperature

What is it measured in?

On a scale starting at absolute zero

What does thermodynamic temperature mean?

Does not rely on the existence of an ideal gas, but instead uses the amount of heat transferred in idealised engine cycles

What does absolute zero mean?

The lowest temperature an object can be cooled to

What is the unit for pressure?

Pascal (Pa)

What does P mean?

Power

What does p mean?

Pressure

What does 1 Pa = ?

1 Newton per square metre (N m^-2)

What does work done mean?

When an object interact, the forces between them can lead to energy being transferred

What does potential energy mean?

The energy is stored in a useful form

Example for the above answer?

In a spring or in a gravitational or electric field

What does kinetic energy mean?

Energy due to the speed of a moving object

What does the thermal energy (heat) content of an object do?

Increase

What are you doing when measuring work?

Focussing on the amount of energy transferred during the process

What does work mean?

The work done in a process is the amount of mechanical energy transferred

What is the symbol for this?

W

What is the SI unit for this?

Joule (J)

What is the equation for work done by force in words?

Work done = force x perpendicular distance moved in the direction of the force

What is the equation for work done by force in symbols?

W = F x Δs