Heat flows from (a)   substances because warmer molecules move faster.

It is the energy transferred when an object is move against force.

(a)  

A branch of physics that deals with the physical laws that relate heat and mechanical work.

(a)  

Energy cannot be created nor destroyed. It can only be transformed from form to another. What law is this?

(a)  

The sum of the molecular kinetic energy (due to the random motion of the molecules) and the molecular potential energy.

(a)  

What is the last process in order to provide electrical energy?

GENERATION - TRANSMISSION - (a)  

If you remove heat to the system, what will happen to its internal energy?

(a)  

When an object is heated, its average kinetic energy of molecules known as (a)   increases.

What does the triangle (∆) in this equation: ∆U stands for?

(a)  

If you add heat to the system, what will happen to its internal energy?

(a)  

What is the unit for WORK?

(a)  

If heat is transferred to the system, what is the sign convention?

(a)  

How many kilovolts does the step up transformer increases when the electricity passes through it?

(a)  

If work is done on the system, what is the sign convention?

(a)  

It is a facility where electricity is generated from energy sources.

(a)  

If heat is transferred from the system, what is the sign convention?

(a)  

It is a device that converts mechanical energy into electrical energy

(a)  

If work is done by the system, what is the sign convention?

(a)  

It refers to the degree of hotness and coldness of an object.

(a)  

Last month, our electric meter reading was 2500 kWh. How much will we pay if the charge per kWh is 3 pesos?

(a)  

A system absorbs 525 kJ of heat and does 350 kJ of work. Calculate the change in internal energy of the system.

(a)  

It took 50 joules to push a shopping cart at 5 meters. With what force was the shopping cart pushed?

(a)  

A cow pulls a cart of milk 10 meters with a force of 50 Newtons. Calculate the work done by a mule.

(a)  

Release heat of 855 kJ, Work of 65 kJ done on the system.

Calculate the change in internal energy of the system.

(a)