report in energy

8/14/2019 Report in Energy

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Potential Energy

An object can store energy as the result of its position. For example, the heavy ball of a

demolition machine is storing energy when it is held at an elevated position. This stored

energy of position is referred to as potential energy. Similarly, a drawn bow is able to

store energy as the result of its position. When assuming its usual position (i.e., when

not drawn), there is no energy stored in the bow. Yet when its position is altered from its

usual equilibrium position, the bow is able to store energy by virtue of its position. This

stored energy of position is referred to as potential energy. Potential energy is the

stored energy of position possessed by an object.

Potential energy exists whenever an object which has mass has a position

within a force field. The most everyday example of this is the position of

objects in the earth's gravitational field.

The potential energy of an object in this case is given by the relation:

PE = mgh

Where:

PE = Energy (in Joules)

m = mass (in kilograms)

g = gravitational acceleration of the earth (9.8 m/sec2)

h = height above earth's surface (in meters)


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Mass Energy

Massenergy equivalence is the concept that the mass of a body is a measure of its

energy content. The mass of a body as measured on a scale is always equal to the total

energy inside, divided by a constant c2 that changes the units appropriately:

where E is energy, m is mass, and c is the speed of light in a vacuum, which is

299,792,458 meters per second.

In the formula, c2 is the conversion factorrequired to convert from units of mass to units

of energy. The formula does not depend on a specific system of units. Using theInternational System of Units,joules are used to measure energy, kilograms for mass,

meters per second for speed. Note that 1 joule equals 1 kgm2/s2. In unit-specific terms,

E(in joules) = m (in kilograms) multiplied by (299,792,458m/s)2. In natural units, the

speed of light is set equal to 1, and the formula becomes an identity.

Conservation of mass and energy

The concept of massenergy equivalence unites the concepts of conservation of massand conservation of energy, allowing particles which have rest mass to be converted to

other forms of energy which have the same mass but require motion, such as kinetic

energy, heat, or light. Kinetic energy or light can also be converted to particles which

have mass. The total mass inside an isolated (totally closed) system remains constant

over time for any single observer in an inertial frame, because energy cannot be created

or destroyed and, in all of its forms, trapped energy has mass. According to the theory

of relativity, mass and energy as commonly understood are two names for the same

thing, and one is not changed to the other. Rather, neither one appears without the

other. Thus, when energy changes type and leaves a system, it takes its mass with it.
http://en.wikipedia.org/wiki/Masshttp://en.wikipedia.org/wiki/Energyhttp://en.wikipedia.org/wiki/Masshttp://en.wikipedia.org/wiki/Celeritashttp://en.wikipedia.org/wiki/Speed_of_lighthttp://en.wikipedia.org/wiki/Metre_per_secondhttp://en.wikipedia.org/wiki/Conversion_factorhttp://en.wikipedia.org/wiki/Category:Units_of_masshttp://en.wikipedia.org/wiki/Category:Units_of_energyhttp://en.wikipedia.org/wiki/Category:Units_of_energyhttp://en.wikipedia.org/wiki/Systems_of_measurementhttp://en.wikipedia.org/wiki/International_System_of_Unitshttp://en.wikipedia.org/wiki/Joulehttp://en.wikipedia.org/wiki/Kilogramhttp://en.wikipedia.org/wiki/Metre_per_secondhttp://en.wikipedia.org/wiki/Kilogramhttp://en.wikipedia.org/wiki/Metrehttp://en.wikipedia.org/wiki/Secondhttp://en.wikipedia.org/wiki/Jouleshttp://en.wikipedia.org/wiki/Kilogramshttp://en.wikipedia.org/wiki/Speed_of_lighthttp://en.wikipedia.org/wiki/M/shttp://en.wikipedia.org/wiki/Natural_unitshttp://en.wikipedia.org/wiki/Conservation_of_masshttp://en.wikipedia.org/wiki/Conservation_of_energyhttp://en.wikipedia.org/wiki/Rest_masshttp://en.wikipedia.org/wiki/Kinetic_energyhttp://en.wikipedia.org/wiki/Kinetic_energyhttp://en.wikipedia.org/wiki/Masshttp://en.wikipedia.org/wiki/Masshttp://en.wikipedia.org/wiki/Energyhttp://en.wikipedia.org/wiki/Masshttp://en.wikipedia.org/wiki/Celeritashttp://en.wikipedia.org/wiki/Speed_of_lighthttp://en.wikipedia.org/wiki/Metre_per_secondhttp://en.wikipedia.org/wiki/Conversion_factorhttp://en.wikipedia.org/wiki/Category:Units_of_masshttp://en.wikipedia.org/wiki/Category:Units_of_energyhttp://en.wikipedia.org/wiki/Category:Units_of_energyhttp://en.wikipedia.org/wiki/Systems_of_measurementhttp://en.wikipedia.org/wiki/International_System_of_Unitshttp://en.wikipedia.org/wiki/Joulehttp://en.wikipedia.org/wiki/Kilogramhttp://en.wikipedia.org/wiki/Metre_per_secondhttp://en.wikipedia.org/wiki/Kilogramhttp://en.wikipedia.org/wiki/Metrehttp://en.wikipedia.org/wiki/Secondhttp://en.wikipedia.org/wiki/Jouleshttp://en.wikipedia.org/wiki/Kilogramshttp://en.wikipedia.org/wiki/Speed_of_lighthttp://en.wikipedia.org/wiki/M/shttp://en.wikipedia.org/wiki/Natural_unitshttp://en.wikipedia.org/wiki/Conservation_of_masshttp://en.wikipedia.org/wiki/Conservation_of_energyhttp://en.wikipedia.org/wiki/Rest_masshttp://en.wikipedia.org/wiki/Kinetic_energyhttp://en.wikipedia.org/wiki/Kinetic_energyhttp://en.wikipedia.org/wiki/Mass


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ELECTROMAGNETIC RADIATION

Electromagnetic radiation energy radiated in the form of a wave as a result of the

motion of electric charges. A moving charge gives rise to a magnetic field, and if the

motion is changing (accelerated), then the magnetic field varies and in turn produces an

electric field. These interacting electric and magnetic fields are at right angles to one

another and also to the direction of propagation of the energy. Thus, an electromagnetic

wave is a transverse wave. If the direction of the electric field is constant, the wave is

said to be polarized. Electromagnetic radiation does not require a material medium and

can travel through a vacuum. The theory of electromagnetic radiation was developed by

James Clerk Maxwell and published in 1865. He showed that the speed of propagation

of electromagnetic radiation should be identical with that of light , about 186,000 mi(300,000 km) per sec. Subsequent experiments by Heinrich Hertz verified Maxwell's

prediction through the discovery of radio waves, also known as hertzian waves. Light is

a type of electromagnetic radiation, occupying only a small portion of the possible

spectrum of this energy. The various types of electromagnetic radiation differ only in

wavelength and frequency; they are alike in all other respects. The possible sources of

electromagnetic radiation are directly related to wavelength: long radio waves are

produced by large antennas such as those used by broadcasting stations; much shorter

visible light waves are produced by the motions of charges within atoms ; the shortest

waves, those ofgamma radiation , result from changes within the nucleus of the atom.

In order of decreasing wavelength and increasing frequency, various types of

electromagnetic radiation include: electric waves, radio waves (including AM, FM, TV,

and shortwaves), microwaves, infrared radiation , visible light, ultraviolet radiation , X

rays , and gamma radiation. According to the quantum theory , light and other forms of

electromagnetic radiation may at times exhibit properties like those of particles in their

interaction with matter. (Conversely, particles sometimes exhibit wavelike properties.)The individual quantum of electromagnetic radiation is known as the photon and is

symbolized by the Greek letter gamma. Quantum effects are most pronounced for the

higher frequencies, such as gamma rays, and are usually negligible for radio waves at

the long-wavelength, low-frequency end of the spectrum.
http://www.encyclopedia.com/doc/1E1-energy.htmlhttp://www.encyclopedia.com/doc/1E1-wave-phys.htmlhttp://www.encyclopedia.com/doc/1E1-light.htmlhttp://www.encyclopedia.com/doc/1E1-spectrum.htmlhttp://www.encyclopedia.com/doc/1E1-atom.htmlhttp://www.encyclopedia.com/doc/1E1-gammarad.htmlhttp://www.encyclopedia.com/doc/1E1-nucleus-phys.htmlhttp://www.encyclopedia.com/doc/1E1-radio.htmlhttp://www.encyclopedia.com/doc/1E1-infrared.htmlhttp://www.encyclopedia.com/doc/1E1-ultravio.htmlhttp://www.encyclopedia.com/doc/1E1-Xray.htmlhttp://www.encyclopedia.com/doc/1E1-Xray.htmlhttp://www.encyclopedia.com/doc/1E1-quantumt.htmlhttp://www.encyclopedia.com/doc/1E1-photon.htmlhttp://www.encyclopedia.com/doc/1E1-energy.htmlhttp://www.encyclopedia.com/doc/1E1-wave-phys.htmlhttp://www.encyclopedia.com/doc/1E1-light.htmlhttp://www.encyclopedia.com/doc/1E1-spectrum.htmlhttp://www.encyclopedia.com/doc/1E1-atom.htmlhttp://www.encyclopedia.com/doc/1E1-gammarad.htmlhttp://www.encyclopedia.com/doc/1E1-nucleus-phys.htmlhttp://www.encyclopedia.com/doc/1E1-radio.htmlhttp://www.encyclopedia.com/doc/1E1-infrared.htmlhttp://www.encyclopedia.com/doc/1E1-ultravio.htmlhttp://www.encyclopedia.com/doc/1E1-Xray.htmlhttp://www.encyclopedia.com/doc/1E1-Xray.htmlhttp://www.encyclopedia.com/doc/1E1-quantumt.htmlhttp://www.encyclopedia.com/doc/1E1-photon.html


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Electromagnetic Spectrum

The electromagnetic (EM) spectrum is just a name that scientists give a bunch of types

of radiation when they want to talk about them as a group. Radiation is energy thattravels and spreads out as it goes-- visible light that comes from a lamp in your house

and radio waves that come from a radio station are two types of electromagnetic

radiation. Other examples of EM radiation are microwaves, infrared and ultraviolet light,

X-rays and gamma-rays. Hotter, more energetic objects and events create higher

energy radiation than cool objects. Only extremely hot objects or particles moving at

very high velocities can create high-energy radiation like X-rays and gamma-rays.

Here are the different types of radiation in the EM spectrum, in order from lowest energy

to highest:
http://imagine.gsfc.nasa.gov/docs/dict_ei.html#em_spectrumhttp://imagine.gsfc.nasa.gov/docs/dict_qz.html#radiationhttp://imagine.gsfc.nasa.gov/docs/dict_qz.html#visiblehttp://imagine.gsfc.nasa.gov/docs/dict_qz.html#radiohttp://imagine.gsfc.nasa.gov/docs/dict_jp.html#microwavehttp://imagine.gsfc.nasa.gov/docs/dict_ei.html#infraredhttp://imagine.gsfc.nasa.gov/docs/dict_qz.html#ultraviolethttp://imagine.gsfc.nasa.gov/docs/dict_qz.html#X-rayhttp://imagine.gsfc.nasa.gov/docs/dict_ei.html#gamma-rayhttp://imagine.gsfc.nasa.gov/docs/dict_ei.html#em_spectrumhttp://imagine.gsfc.nasa.gov/docs/dict_qz.html#radiationhttp://imagine.gsfc.nasa.gov/docs/dict_qz.html#visiblehttp://imagine.gsfc.nasa.gov/docs/dict_qz.html#radiohttp://imagine.gsfc.nasa.gov/docs/dict_jp.html#microwavehttp://imagine.gsfc.nasa.gov/docs/dict_ei.html#infraredhttp://imagine.gsfc.nasa.gov/docs/dict_qz.html#ultraviolethttp://imagine.gsfc.nasa.gov/docs/dict_qz.html#X-rayhttp://imagine.gsfc.nasa.gov/docs/dict_ei.html#gamma-ray


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There are some general properties shared by all forms of electromagnetic radiation:

1. It can travel through empty space. Other types of waves need some sort of

medium to move through: water waves need liquid water and sound waves need

some gas, liquid, or solid material to be heard.

2. The speed of light is constant in space. All forms of light have the same speed of

299,800 kilometers/second in space (often abbreviated as c). From highest

energy to lowest energy the forms of light are Gamma rays, X-rays, Ultraviolet,

Visible, Infrared, Radio. (Microwaves are high-energy radio waves.)

3. A wavelength of light is defined similarly to that of water waves---distance

between crests or between troughs. Visible light (what your eye detects) has

wavelengths 4000-8000 ngstroms. 1 ngstrom = 10

-10

meter. Visible light issometimes also measured in nanometers: 1 nanometer = 10-9 meter = 10

ngstroms, so in nanometers, the visible band is from 400 to 800 nanometers.

Radio wavelengths are often measured in centimeters: 1 centimeter = 10 -2 meter

= 0.01 meter. The abbreviation used for wavelength is the greek letter lambda: .


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Quiz:

1. What is Potential Energy? (1 pt)

2. A box has a mass of 5.8kg. The box is lifted from the garage floor and placed on

a shelf. If the box gains 145J of Potential Energy (PE), how high is the shelf?

(5pts)

3. In natural units, the speed of light is set equal to ___?__, and the formula

becomes an identity. (1 pt)

4. Give at last 3 types of radiation in the EM spectrum. (3 pts)

Answer:

1. Potential energy is the stored energy of position possessed by an object.

2. Solution:

PE = mgh; h = PE / mg

H= 145J / (5.8kg) * (9.8 m/sec)2

H = 2.55 meter high

3. 1

4. Radiowaves, infrared light, visible, ultraviolet light, x-rays, gamma rays
http://en.wikipedia.org/wiki/Natural_unitshttp://en.wikipedia.org/wiki/Natural_units


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Rizal Technological University

Boni Avenue, Mandaluyong City

College of Engineering and Industrial Technology

Industrial Engineering Department

In Partial Fulfillment in the Requirements of the Subject:

SYSTEMS ENGINEERING

REPORT:

Detailed System Design

Submitted by:

Faustino, Lannie

Matias, Danica Dawn

Submitted to:

Engr. Maia Victoria Lazaro

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