Physics chapter 4 section 1

The temprature is proportional to?

The kinetic energy of the atoms of an matter

And only when can we define the temprature of teh system?

Therefor what is essential in defining the temprature

After equalibrium

Why is the thermal equalibrium essential in determining temprature?

Beacuse the thermometer has to be the same exact temprature as the object so it has to be at equalibrium

What is an common instrument we use for measuring tempratures of the three scales?

Thermometer

The diffrent scales for measuring temprature are?

Celsius kelvin and fahrenhite

Energy is transfered between?

Objects with higher tempratures to those with lower tempratures

Thermal equalibrium

A state where two bodies are in physical contact with eachother that have identical tempratures

Heat

Temprature

Its the transfer of temprature from objects of different tempratures

Is the measure of kinetic energy in an object

mechanics

Can be used to explain much of what is happening at the microscopic level

learning microscopic They will help us determine the accounting of which levels?

Macroscopic levels

Energy is transferred as?

Heat

As the energy of the water increase the energy of the mooecules in the soft drink snd the atoms of the can decreases until they have equal?

Kinetic energies

The energy can only be transfered between objects of lower to higher but with what can lower to higher?

With collisions

With collisions its possible? How ever? So that makes it generally?

For the energies to move both ways . Due to the diffrence between the kinetic energy the hooter object has more which causes more energy to be released onto the colder one

Move from one direction

The net transfer between objects of the same temprature is equal to?

Zero

The atoms of all objects are in a ? Which means. Which states

Continues motion. All have some internal energy . Beacuse temprature is the measure of that internal energy which means all objects have a temprature

When their is no temprature diffrence between the objects

Then there is no net energy transfered as heat

Energy transfer (heattransfer) Depends on?

Depends on the temprature diffrence Between two objects

The greater the difference in between the tempratures? For example

The greater the energy being transfered as heat

5 and 30 are euqal in heat tarnsfer with 0 and 25

If you have two hands then put them into lukewarm water?

1 hand u put it into cold water

2 hand u put it into hot water

1 hand will feel its warm

2 hand will feel its cold

Internal energy

The energy of matter due to the motion of its molecules its the total energy of these molecules

The body temprature of an human is?

37

Beacuse heat like work is? That makes its unit?

Energy transit, joules

The si unit of energy is? The symbol of heat is? What about inetrnal energy?

Joule Q Its u

Thermal iunits and their values in joules

Joule j equal to kg(m²/s²) si unit of energy

Calori cal 4.186j non si unit of heat used in older testaments

Kcal kcal 4n186 × 10³j non si unit

Dietery calorie euqal one cal in food and nutritioonal science

British thermal unit btu 1.055 × 10^* english unit of heat used in engineering air conditioning and refigineration

What are the ways we can increase in a materials internal energy? For example

Friction and deformation in a solid

When a metal is bent or when a rubber band is stretched

Friction between objects exist

So not all the work needed to overcome friction apears into mechanical energy it turns into KE PE and U

And for the same reason in inelastic collisions. Why?

not all the kinetic remains as kinetic energy , some of it is absorbed by the object as internal energy

If what energies are taken into account will we find a conserved energy rule?

ME energy and also U

So what energy does the KE and PE turn into?

It turns into U