Weeks 7 to 9 Assignment
Question 1- The difference between heat and temperature is that heat is measured by temperature. Heat travels from areas of higher temperatures to areas of lower temperatures. Temperature indicates level of heat present. (Hammer & Price, 2001, p. 292).
Question 2- The principal means by which heat can be transferred are radiation, conduction, and convection. Radiation is the only way the sun's heat reaches earth. Body with temperature above absolute zero will emit thermal radiation in the form of electromagnetic waves like infrared. Conduction usually involves solid matter, especially metals, but lesser with fluids and gases. Convection usually involves liquid. Conduction may occur alongside if involving solid …show more content…
The choice of suitable materials that does not generate electrostatic is the simplest method of avoiding static. A person can make a material suitable by spray coating a surface to make it conductive. The spray can be used on car seats and carpeting, and thin sheeting. (Hammer & Price, 2001, p. 354). Neutralizing electrostatic can be divided into three major types: radioactive, high-voltage, and induction neutralizers. The radioactive neutralizer emits alpha particles bearing unit charges of positive electricity. The high-voltage neutralizer produces high potential in air near surface being treated. Atoms become ionized and release electrons. Induction neutralizer functions to come up with potentials of polarity opposite to that causing electrification. Humidification can be done by increasing the humidity above 65% permits static charges to dissipate. (Hammer & Price, 2001, p. …show more content…
(Hammer & Price, 2001, p. 401).
* Water is the commonest extinguishants with some limitations. Overall, water is low in cost, simple to use, and effective. More water may be needed depending on the mixture and temperature. (Hammer & Price, 2001, p. 402).
* Gas extinguishants is more effective than water in enclosed spaces. Examples are carbon dioxide, nitrogen, and halogenated hydrocarbons. (Hammer & Price, 2001, p. 402-403).
* Foams cools and blankets, sealing off the burning fuel from the surrounding atmosphere. Firefighting foams are classified as mechanical or chemical. (Hammer & Price, 2001, p. 405).
* Solid extinguishants are useful for Class B fires, such as those involving grease from a car. Solid extinguishants can come in the form of sand or dirt. Fire can be suppressed by blanketing the fire with solid extinguishants. (Hammer & Price, 2001, p. 406).
* Other fire extinguishants, such as special substances have been made for specific metals. An example of the substance is trimetoxyboroxine. (Hammer & Price, 2001, p.
Question 1- The difference between heat and temperature is that heat is measured by temperature. Heat travels from areas of higher temperatures to areas of lower temperatures. Temperature indicates level of heat present. (Hammer & Price, 2001, p. 292).
Question 2- The principal means by which heat can be transferred are radiation, conduction, and convection. Radiation is the only way the sun's heat reaches earth. Body with temperature above absolute zero will emit thermal radiation in the form of electromagnetic waves like infrared. Conduction usually involves solid matter, especially metals, but lesser with fluids and gases. Convection usually involves liquid. Conduction may occur alongside if involving solid …show more content…
The choice of suitable materials that does not generate electrostatic is the simplest method of avoiding static. A person can make a material suitable by spray coating a surface to make it conductive. The spray can be used on car seats and carpeting, and thin sheeting. (Hammer & Price, 2001, p. 354). Neutralizing electrostatic can be divided into three major types: radioactive, high-voltage, and induction neutralizers. The radioactive neutralizer emits alpha particles bearing unit charges of positive electricity. The high-voltage neutralizer produces high potential in air near surface being treated. Atoms become ionized and release electrons. Induction neutralizer functions to come up with potentials of polarity opposite to that causing electrification. Humidification can be done by increasing the humidity above 65% permits static charges to dissipate. (Hammer & Price, 2001, p. …show more content…
(Hammer & Price, 2001, p. 401).
* Water is the commonest extinguishants with some limitations. Overall, water is low in cost, simple to use, and effective. More water may be needed depending on the mixture and temperature. (Hammer & Price, 2001, p. 402).
* Gas extinguishants is more effective than water in enclosed spaces. Examples are carbon dioxide, nitrogen, and halogenated hydrocarbons. (Hammer & Price, 2001, p. 402-403).
* Foams cools and blankets, sealing off the burning fuel from the surrounding atmosphere. Firefighting foams are classified as mechanical or chemical. (Hammer & Price, 2001, p. 405).
* Solid extinguishants are useful for Class B fires, such as those involving grease from a car. Solid extinguishants can come in the form of sand or dirt. Fire can be suppressed by blanketing the fire with solid extinguishants. (Hammer & Price, 2001, p. 406).
* Other fire extinguishants, such as special substances have been made for specific metals. An example of the substance is trimetoxyboroxine. (Hammer & Price, 2001, p.