write all that is not cancelled in word document

timer Asked: Jan 28th, 2019
account_balance_wallet $5

Question Description

The attached document has cancelled parts, write all that is not cancelled in word document.

You must use the "equation tools" function to write equations.

Where there is figures indicate the figure number only (Fig x.xx) do not draw.

Do not join work from different pages, ie. each page of the word document you develop should match the corresponding page of the attached document.

Tutor Answer

School: New York University

check_circle AprilRob marked this question as complete.

Work, energy, power and machines
Energy is a scalar quantity measured in joules.
Sources of energy
The following are the main natural sources of energy.
The sun
The sun is the main source of energy on earth, producing both heat and light.
Fig 4.1
Wind energy is used in driving windmills for pumping water or generating electricity.
Fig 4.2
Wood and charcoal, coal, petroleum and natural gases are fuels which when burnt produce energy.
Deep inside the earth’s crust is extremely hot. When underground water is exposed to this immense
heat heat, it turns into steam under very high pressure and gushes out of the earth’s surface with a lot
of energy. May be used to turn turbines in geothermal power stations to produce electricity.
Fig 4.3
High dams and waterfalls
This water may be used to turn turbines in hydroelectric power stations to produce electricity.
Fig 4.4
Tides and waves in oceans possess energy which may be converted to useful forms such as electrical
Nuclear (or Atomic) energy
When unstable atoms of a nucleus is split through reactions such as nuclear fission, energy is released.
This energy may be used to heat water to produce steam at high pressure. The steam is then used to
drive turbines in to produce electricity.
Nuclear energy can also be produced by combining two light atomic nuclei by a process known as
nuclear fission.
Renewable and non – renewable energy resources

Renewable energy is that which is supplied by a process in the environment that can be recycled or reused over and over again. The supplies are inexhaustible. Non-renewable energy is supplied by
processes that are exhaustible in nature. The materials once used up cannot be retrieved.
Table 4.1 shows some renewable and non-renewable resources.
Table 4.1: renewable and noon-renewable energy resources
Renewable resources
Solar energy
Wave/energy/tidal energy
Firewood, charcoal, biogas
Power alcohol

Non-renewable resources
Natural gas
Natural gas
Nuclear energy

Forms of energy
Below are some of the forms of energy that re encountered in everyday life.
Chemical energy
Chemical energy is a form of energy stored in chemical compounds. Chemical energy is found in foods,
oils, charcoal, coal, firewood, biogas and batte...

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