Work, Power and Energy

Question 1

Alternative Sources of Energy

Answer 1

Wind, hydro electricity, solar power,bio fuels, hydrogen

Question 2

Potential Energy

Answer 2

potential energy is the energy that is stored in an object due to its position

Question 3

Kinetic Energy

Answer 3

Kinetic energy is the energy of motion, observable as the movement of an object

Question 4

Law of Conservation Energy

Answer 4

The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another.

Question 5

What is density?

Answer 5

Density: Density is the mass per unit volume of a substance. The SI unit for density is kilograms per cubic meter (kg/m³) 1.

Question 6

What is force?

Answer 6

Force: Force is an influence that changes the motion of an object. The SI unit for force is the newton (N) 1.

Question 7

What is a watt?

Answer 7

Watt: Watt is the unit of power. It is defined as one joule per second. The SI unit for power is watts (W) 1.

Question 8

What is work?

Answer 8

Work: Work is the energy transferred when a force acts on an object and moves it through a distance. The SI unit for work is joules (J) 1.