Temperature
On the macroscopic scale, this is the measure of how hot or cold a substance is.
Temperature
The SI unit for measuring heat energy.
Joule
These are the three main methods by which thermal energy can be transferred among objects.
Conduction, convection, and radiation.
This is the phase of matter in which particles are close together and can slide past each other.
Liquid
The change in position of an object.
Displacement
Microscopically, temperature is a measure of the ______________________ of the particles of a substance/ system.
average kinetic energy
Heat transfers from one object to another due to a _______________________.
Temperature difference.
Conduction is most pronounced in this state of matter.
Solid state.
When a substance is converted directly from a solid to a gas, it undergoes this kind of phase change.
Sublimation.
This is the kind of electromagnetic radiation that can be seen by the human eye.
Visible light.
This is the freezing point of fresh water is SI units.
273K
The total random kinetic energy and total potential energy of particles of a substance.
Internal enegy
Have many free electrons which transfer thermal energy through collisions.
Metallic conductors.
Of the three typical states of matter, this has the highest interparticle potential energy.
Gas
Oscillations/ vibrations/ disturbances of particles or fields, about an equilibrium position, which transfer energy without a net transfer of matter
Waves
A constant power of 100 W is supplied to a block of iron of mass 2.50 kg that is initially at 293.0 K for 30.0 minutes. Calculate the final temperature of the iron in °C. The specific heat capacity of iron may be taken as 450 J·kg⁻¹·K⁻¹.
179.85 ∘C.
An ideal gas has volume 2500 cm³ and pressure 0.20 MPa. If the temperature and mass are constant, calculate the final pressure in kPa when the gas is compressed to 0.0010 m³.
500 kPa
Power radiated by an object is proportional to ___________________________________
The surface area and 4th power of the surface temperature (in kelvins).
During melting _______________ of the particles stays the same but _________________ of the particles increases.
Kinetic , Potential
The most famous Shanghainese physicist — is best known for his theoretical work (with C. N. Yang) that showed parity is not conserved in weak interactions.
Tsung-Dao (T. D.) Lee
300.0 g of liquid water at 325 K is poured into 150.0 of ice at −10.0 oC. Given the specific heat capacity of liquid water: 4180 JKg-1K-1, specific heat capacity of ice: 2090 JKg-1K-1, latent heat of fusion of ice 334000 JKg-1, calculate the final temperature of the system if all the ice melts.
6.27oC or 279K
An ideal gas has volume 1200 cm³ and temperature 20.0 °C. If the pressure and mass are constant, calculate the final volume in m³ when the gas is heated to 80.0 °C.
0.00144 m3
Name two galactic objects: 1) approximately a perfect emitter of radiation 2) approximately a perfect absorber of radiation
1) star 2) Balck hole
A point where water exists in all the three phases of matter.
The triple point of water.
The latest mission to China’s Tiangong space station
Shenzhou-22