Heat is the form of energy due to molecular motion. When energy
is added to an object its molecules move faster and heat is
generated.

Term1/23

How could you increase the kinetic energy of a wagon without increasing its mass

Definition1/23

By increasing its speed, or velocity.

Term1/23

What is the rlationship between force and acceleration

Definition1/23

force =mass x acceleration

therefore mass = force /acceleration

and acceleration = force/mass

Term1/23

Is the total mass and energy in the universe constantly changing

Definition1/23

The Law of conservation of mass-energy indicates that the
mass-energy of the universe is constantly changing to maintain the
mass-energy constant.

Term1/23

Name the two forces that can affect an object's velocity

Definition1/23

friction and gravity

Term1/23

How do you calculate vaparization heat of water

Definition1/23

To determine the heat of vaporization you must first determine
the amount of heat the substance gave off to water by multiplying
the mass of water by the change in temperature and the specific
heat capacity of water. You need to divide this number by the
number of moles of the unknown substance.

Term1/23

How does a substance change when its thermal energy changes

Definition1/23

For example, when heat energy (thermal energy) is added to a
substance, either its temperature will increase, or it will change
its state (as when ice is melted).

Term1/23

What is the force exerted by an object

Definition1/23

Actually, when we say force exerted it is the what we called tension. Tension is the opposite type of compression. But it doesnt mean it redirects the word "force exerted" but the term magnitude of the pulling force exerted by an object.

this often happens on strings,cable,chain etc.

This would be its system of equilibrium:

A system is in equilibrium when the sum of all forces is zero.

[1]

Term1/23

Thermal conduction is the transfer of energy

Definition1/23

Yes it is.

Heat is form of energy and can be transferred through 3 mode

Conduction Convection and Radiation

Term1/23

You test a machine and find that it exerts a force of 5 N for each 1 N of force you exert operating the machine What is the actual mechanical advantage of the machine

Definition1/23

The mechanical advantage is 5.

Mechanical Advantage = Output Force/Input Force

Term1/23

What are three ways thermal energy can be transferred from one substance to another

Definition1/23

Through conduction, convection, and radiation.

Term1/23

On what point does a lever point

Definition1/23

A lever pivots on its fulcrum.

Term1/23

If the temperature is 79 degrees Fahrenheit outside what is the temperature in degrees Celsius

Definition1/23

79F = 26.1C

Term1/23

A car rolling down the hill is an example of

Definition1/23

Kinetic energy.

Term1/23

Is perspex a good conductor of heat

Definition1/23

No, it's a thermal insulator.

Term1/23

Is swimming potential energy or kinetic energy

Definition1/23

potential energy is stored energy and kinetic energy is being
used.

So it is kinetic.

Term1/23

What is the relationship exists between the force exerted on a spring and the resulting elongation of the spring

Definition1/23

F = kx

where F = force, k = spring constant or spring stiffness, x =
elongation

Term1/23

How fast is 116 kph

Definition1/23

116 kilometers per hour (kph) is 72.1 miles per hour.

Term1/23

What kinda of machine is made of two or more simple machines

Definition1/23

A complex machine.

Term1/23

What is the point at which the net flow of thermal energy between two objects at the same temperature is zero

Definition1/23

When the temperature of the two objects is equal, the Thermal
Flow will stop.

Term1/23

What is the term of Convection Conduction and Radiation

Definition1/23

Convection, conduction, and radiation are all methods of heat
transfer.

Term1/23

What i the SI unit for force which is equal to 1 kg ms2

Definition1/23

It is 1 Newton.

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Cards in this guide (23)

Distinguish between heat conductance and thermal conductivity

Heat is the form of energy due to molecular motion. When energy
is added to an object its molecules move faster and heat is
generated.

How could you increase the kinetic energy of a wagon without increasing its mass

By increasing its speed, or velocity.

What is the rlationship between force and acceleration

force =mass x acceleration

therefore mass = force /acceleration

and acceleration = force/mass

Is the total mass and energy in the universe constantly changing

The Law of conservation of mass-energy indicates that the
mass-energy of the universe is constantly changing to maintain the
mass-energy constant.

Name the two forces that can affect an object's velocity

friction and gravity

How do you calculate vaparization heat of water

To determine the heat of vaporization you must first determine
the amount of heat the substance gave off to water by multiplying
the mass of water by the change in temperature and the specific
heat capacity of water. You need to divide this number by the
number of moles of the unknown substance.

How does a substance change when its thermal energy changes

For example, when heat energy (thermal energy) is added to a
substance, either its temperature will increase, or it will change
its state (as when ice is melted).

What is the force exerted by an object

Actually, when we say force exerted it is the what we called tension. Tension is the opposite type of compression. But it doesnt mean it redirects the word "force exerted" but the term magnitude of the pulling force exerted by an object.

this often happens on strings,cable,chain etc.

This would be its system of equilibrium:

A system is in equilibrium when the sum of all forces is zero.

[1]

Thermal conduction is the transfer of energy

Yes it is.

Heat is form of energy and can be transferred through 3 mode

Conduction Convection and Radiation

You test a machine and find that it exerts a force of 5 N for each 1 N of force you exert operating the machine What is the actual mechanical advantage of the machine

The mechanical advantage is 5.

Mechanical Advantage = Output Force/Input Force

What are three ways thermal energy can be transferred from one substance to another

Through conduction, convection, and radiation.

On what point does a lever point

A lever pivots on its fulcrum.

If the temperature is 79 degrees Fahrenheit outside what is the temperature in degrees Celsius

79F = 26.1C

A car rolling down the hill is an example of

Kinetic energy.

Is perspex a good conductor of heat

No, it's a thermal insulator.

Is swimming potential energy or kinetic energy

potential energy is stored energy and kinetic energy is being
used.

So it is kinetic.

What is the relationship exists between the force exerted on a spring and the resulting elongation of the spring

F = kx

where F = force, k = spring constant or spring stiffness, x =
elongation

How fast is 116 kph

116 kilometers per hour (kph) is 72.1 miles per hour.

What kinda of machine is made of two or more simple machines

A complex machine.

What is the point at which the net flow of thermal energy between two objects at the same temperature is zero

When the temperature of the two objects is equal, the Thermal
Flow will stop.

What is the term of Convection Conduction and Radiation

Convection, conduction, and radiation are all methods of heat
transfer.

What i the SI unit for force which is equal to 1 kg ms2

Why are there no machines with 100 percent efficiency

A rocket accelerates at a rate of 30 ms for 2 minutes What is its change in velocity

A jogger runs at an average speed of 5 ms for 3 minutes then finishes with an average speed of 4 ms for 2 minutes What is his average speed in ms for the run