ENT 211 Tutorial Week 1
... Why is Heat Transfer a nonequilibrium phenomenon? Heat transfer is a non-equilibrium phenomena since in a system that is in equilibrium there can be no temperature differences and thus no heat flow. ...
... Why is Heat Transfer a nonequilibrium phenomenon? Heat transfer is a non-equilibrium phenomena since in a system that is in equilibrium there can be no temperature differences and thus no heat flow. ...
Specific and latent heat
... 9. A 50 W heater is used to heat, an aluminium block with a mass of 5 kg. After 10 minutes the temperature of the block has risen by 400C. Calculate (a) the heat given out by the heater; (b) the specific heat capacity of aluminium. (c) Why is your answer different from the correct value given in que ...
... 9. A 50 W heater is used to heat, an aluminium block with a mass of 5 kg. After 10 minutes the temperature of the block has risen by 400C. Calculate (a) the heat given out by the heater; (b) the specific heat capacity of aluminium. (c) Why is your answer different from the correct value given in que ...
METAMORPHIC ROCKS
... Metamorphic rocks are formed when heat and/or pressure cause rocks to change. Why? As conditions change within the earth, rocks are also forced to change. Heat and pressure may cause the chemical elements in the original rock to react and reform into minerals. These new minerals are often aligned (a ...
... Metamorphic rocks are formed when heat and/or pressure cause rocks to change. Why? As conditions change within the earth, rocks are also forced to change. Heat and pressure may cause the chemical elements in the original rock to react and reform into minerals. These new minerals are often aligned (a ...
student powerpoint 3
... Body Fluid Balance -Sweating will increase during exercise in heat -Leads to Dehydration and electrolyte loss if not attended to. -3 to 4 litres of sweat loss per hour can occur, 6-10% of body weight for endurance athletes, this can only be sustained for a number of hours. - Can lead to a decrease i ...
... Body Fluid Balance -Sweating will increase during exercise in heat -Leads to Dehydration and electrolyte loss if not attended to. -3 to 4 litres of sweat loss per hour can occur, 6-10% of body weight for endurance athletes, this can only be sustained for a number of hours. - Can lead to a decrease i ...
Thermodynamics!!!
... Heat always moves from “warm to cold” meaning from something with a higher temperature to something with a lower temperature ...
... Heat always moves from “warm to cold” meaning from something with a higher temperature to something with a lower temperature ...
The fundamental principles of radiant heat barrier
... very low emittance values “e-values” (typically 0.03, compared to 0.90 for most insulation) and that significantly reduces heat transfer by radiation. In order to understand reflective insulation capabilities, one must be aware that the radiant heat rays of the sun do not become heat until they stri ...
... very low emittance values “e-values” (typically 0.03, compared to 0.90 for most insulation) and that significantly reduces heat transfer by radiation. In order to understand reflective insulation capabilities, one must be aware that the radiant heat rays of the sun do not become heat until they stri ...
Regents Earth Science
... 2. Air rising in convection currents gets cooler, making it colder at higher elevations. B. Sometimes, the surface air is colder than the air higher up. This is called a temperature inversion. 1. Occur on clear, dry nights 2. Chimney smoke can be seen hanging near the ground. C. Temperature range = ...
... 2. Air rising in convection currents gets cooler, making it colder at higher elevations. B. Sometimes, the surface air is colder than the air higher up. This is called a temperature inversion. 1. Occur on clear, dry nights 2. Chimney smoke can be seen hanging near the ground. C. Temperature range = ...
Discovery Education Science Connection
... humidity is 60%, the combination will actually make the body feel as though it is 100° F outside. It is important to understand that the heat index assumes that an individual is standing in a shady place and there is a light breeze. These conditions may not always be the case. Higher winds can cool ...
... humidity is 60%, the combination will actually make the body feel as though it is 100° F outside. It is important to understand that the heat index assumes that an individual is standing in a shady place and there is a light breeze. These conditions may not always be the case. Higher winds can cool ...
Name Date Class THE FLOW OF ENERGY—HEAT AND WORK
... 20. The temperature of a piece of unknown metal with a mass of 18.0 g increases from 25.0°C to 40°C when the metal absorbs 124.2 J of heat. What is the specific heat of the unknown metal? Compare your answer to the values listed in Table 17.2 of your textbook. What is the identity of the unknown met ...
... 20. The temperature of a piece of unknown metal with a mass of 18.0 g increases from 25.0°C to 40°C when the metal absorbs 124.2 J of heat. What is the specific heat of the unknown metal? Compare your answer to the values listed in Table 17.2 of your textbook. What is the identity of the unknown met ...
Schaums Heat
... 13. An electric heater that produces 900 W of power is used to vaporize water. How much water at 100 0C can be changed to steam at 1000C in 3 minutes by the heater? 14. A 3 gram bullet (c = 128 J/kgC) moving at 180 m/s enters a bag of sand and stops. By what amount does the temperature of the bullet ...
... 13. An electric heater that produces 900 W of power is used to vaporize water. How much water at 100 0C can be changed to steam at 1000C in 3 minutes by the heater? 14. A 3 gram bullet (c = 128 J/kgC) moving at 180 m/s enters a bag of sand and stops. By what amount does the temperature of the bullet ...
Thermochemistry
... Second Law of Thermodynamics One statement defining the second law is that a spontaneous natural processes tend to even out the energy gradients in a isolated system. Can be quantified based on the entropy of the system, S, such that S is at a maximum when energy is most uniform. Can also be vi ...
... Second Law of Thermodynamics One statement defining the second law is that a spontaneous natural processes tend to even out the energy gradients in a isolated system. Can be quantified based on the entropy of the system, S, such that S is at a maximum when energy is most uniform. Can also be vi ...
AA2 FALL 2005
... while water bodies can mix and have higher heat capacity. Solids (land) are better conductors than gases (atmosphere). Convection is physical mixing with a strong vertical motion in gaseous or liquid media. As heat is absorbed by the ground, the air immediately above is heated. Warm air is less dens ...
... while water bodies can mix and have higher heat capacity. Solids (land) are better conductors than gases (atmosphere). Convection is physical mixing with a strong vertical motion in gaseous or liquid media. As heat is absorbed by the ground, the air immediately above is heated. Warm air is less dens ...
metIstudyguide F14
... 10. Which can hold more water vapor… Warm air or cold air? 11. What is dew point? 12. The hot seat belt against skin is what form of heat transfer? 13. Earth receives energy from sun through which method? 14. Heat flow that cycles (heat rises & cold sinks) is which form of heat transfer? 15. **Which ...
... 10. Which can hold more water vapor… Warm air or cold air? 11. What is dew point? 12. The hot seat belt against skin is what form of heat transfer? 13. Earth receives energy from sun through which method? 14. Heat flow that cycles (heat rises & cold sinks) is which form of heat transfer? 15. **Which ...
Slide 1
... equilibrium and can return to its initial conditions along the same path Most natural processes are irreversible Sets an upper limit on efficiency of heat engines ...
... equilibrium and can return to its initial conditions along the same path Most natural processes are irreversible Sets an upper limit on efficiency of heat engines ...
Heat, Enthalpy, Temperature
... If we know the amount of heat we can calculate the change in temperature and vice versa. This is called CALORIMETRY o q = mCpT o q = heat in J o m = mass in g o Cp = specific heat capacity in J/gC (see below) o T = change in temperature in C or K Cp = specific heat capacity (the p means constan ...
... If we know the amount of heat we can calculate the change in temperature and vice versa. This is called CALORIMETRY o q = mCpT o q = heat in J o m = mass in g o Cp = specific heat capacity in J/gC (see below) o T = change in temperature in C or K Cp = specific heat capacity (the p means constan ...
SPECIFIC HEAT
... CALORIMETRY & SPECIFIC HEAT THEORY Heat energy is defined as energy that flows from hot objects to cold objects. It can be measured in calories, kilocalories, or joules of energy. One calorie is defined as the amount of heat required to raise the temperature of 1 gram of water by 1 C. One calorie i ...
... CALORIMETRY & SPECIFIC HEAT THEORY Heat energy is defined as energy that flows from hot objects to cold objects. It can be measured in calories, kilocalories, or joules of energy. One calorie is defined as the amount of heat required to raise the temperature of 1 gram of water by 1 C. One calorie i ...
File
... A 9.84 oz ingot of unknown metal is heated from 73.2 °F to 191.2 °F. This requires 3.91 kcal of energy. Calculate the specific heat of the metal and determine its identity. ...
... A 9.84 oz ingot of unknown metal is heated from 73.2 °F to 191.2 °F. This requires 3.91 kcal of energy. Calculate the specific heat of the metal and determine its identity. ...
Heat Transfer
... heat is transferred by invisible waves is this is called radiation. When a person touches that warmed object then some of the energy in the object’s molecules is transferred to the molecules in the person’s skin. This transfer of heat is called conduction. If the heated molecules move to another loc ...
... heat is transferred by invisible waves is this is called radiation. When a person touches that warmed object then some of the energy in the object’s molecules is transferred to the molecules in the person’s skin. This transfer of heat is called conduction. If the heated molecules move to another loc ...
Climate influences File
... Factors that influence the climate of a region 1. Elevation or altitude - The higher the elevation, the colder the climate. Less dense air cannot hold heat, while more dense air can hold heat. 2. Distance from an ocean or large body of water - Moderates the temperature, less extreme heat and cold. W ...
... Factors that influence the climate of a region 1. Elevation or altitude - The higher the elevation, the colder the climate. Less dense air cannot hold heat, while more dense air can hold heat. 2. Distance from an ocean or large body of water - Moderates the temperature, less extreme heat and cold. W ...
Heat wave
A heat wave is a prolonged period of excessively hot weather, which may be accompanied by high humidity, especially in oceanic climate countries. While definitions vary, a heat wave is measured relative to the usual weather in the area and relative to normal temperatures for the season. Temperatures that people from a hotter climate consider normal can be termed a heat wave in a cooler area if they are outside the normal climate pattern for that area.The term is applied both to routine weather variations and to extraordinary spells of heat which may occur only once a century. Severe heat waves have caused catastrophic crop failures, thousands of deaths from hyperthermia, and widespread power outages due to increased use of air conditioning. A heat wave is considered extreme weather, and a danger because heat and sunlight may overheat the human body.