What is equal to the heat. Quantity of heat. Units of the amount of heat. Specific heat

What process is called thermal conductivity? What environments is it possible? Is it the same for various substances? What is the process called convection? What environments is it possible? What does convection speed depend on? What a process is called radiation. What features is the type of heat transfer you known?

The energy that receives or loses heat during heat transfer is called the amount of heat. Designation: q Units of measurement: JOUL (J) (KJ) Calorie (Cal) 1 cal \u003d 4,19 J 1 kcal \u003d 4190 J 4.2 KJ calorie - this is the amount of heat that is necessary for heating 1 g of water for 1 ° C .

1 Stage of the experiment 1. Pour water into the flasks: in the second 2 times more than the first one. 2. Fasten the flasks in the pockets of the tripods 3. Measure the initial temperature of the fluid in each flask. 4. Slash alcohol. 5. At the same time start heating the flasks. 6. Measure the temperature in each flask after 2 minutes. 7. Make a conclusion.

An experiment to clarify the dependence of the amount of heat transmitted by the substance from the mass of this substance. M 1.

2 Stage of Experiment 1. Pour an equal amount of water in 2 flasks. 2. Fasten the flasks in the pockets of the tripods 3. Measure the initial temperature of the fluid in each flask. 4. Slash alcohol. 5. At the same time start heating the flasks. 6. Without removing the thermometer from the liquid, stop the heating when the temperature in the first flask will rise to 20 ° C, and in the second 25 ° C. 7. Measure the time that is needed for each process. 8. Make conclusions.

An experiment to clarify the dependence of the amount of heat transmitted by the substance from changing its temperature. M 1 \u003d M T 1

3 Stage of Experiment 1. Pour an equal amount of water and oil in 2 flasks. 2. Fasten the flasks in the pockets of the tripods 3. Measure the initial temperature of the fluid in each flask. 4. Slash alcohol. 5. At the same time start heating the flasks. 6. Measure the temperature in each flask after 2 minutes. 7. Make a conclusion.

T 2 (Time) ΔT 1 \u003d ΔT 2 (Temperature) Q 1\u003e Q 2 Conclusion: The amount of heat that is necessary for heating (cooling) of the body depends on the genus "title \u003d" (! Lang: experiment to clarify the dependence of the amount of heat, transmitted from his kind. M 1 \u003d m 2 1 2 T 1\u003e T 2 (time) Δt 1 \u003d ΔT 2 (temperature) q 1\u003e q 2 Conclusion: the amount of heat that is necessary for heating (cooling) of the body depends on the genus" class="link_thumb"> 11 !} An experiment to clarify the dependence of the amount of heat transmitted from its kind. M 1 \u003d M T 1\u003e T 2 (Time) ΔT 1 \u003d ΔT 2 (Temperature) Q 1\u003e Q 2 Conclusion: The amount of heat that is necessary for heating (cooling) of the body depends on the genus of the substance. 1 2 Q ~ from the kind of substance T 2 (Time) ΔT 1 \u003d ΔT 2 (Temperature) Q 1\u003e Q 2 Conclusion: The amount of heat that is necessary for heating (cooling) of the body depends on the kind of substance "\u003e T 2 (time) ΔT 1 \u003d ΔT 2 (temperature) Q 1\u003e Q 2 pin: The amount of heat that is necessary for heating (cooling) of the body depends on the kind of substance. 1 2 q ~ from the kind of substance "\u003e T 2 (time) ΔT 1 \u003d Δt 2 (temperature) Q 1\u003e Q 2 Conclusion: The amount of heat that is necessary for heating (cooling) depends on the kind of "Title \u003d" (! Lang: experiment to clarify the dependence of the amount of heat transmitted from its kind. M 1 \u003d m 2 1 2 T 1\u003e T 2 ( time) Δt 1 \u003d Δt 2 (temperature) Q 1\u003e Q 2 pin: the amount of heat that is necessary for heating (cooling) of the body depends on the kind of substance"> title="An experiment to clarify the dependence of the amount of heat transmitted from its kind. M 1 \u003d m 2 1 2 T 1\u003e T 2 (Time) ΔT 1 \u003d ΔT 2 (Temperature) Q 1\u003e Q 2 Conclusion: The amount of heat that is necessary for heating (cooling) of the body depends on the kind of substance"> !}

Designated: with a unit of measure: J / kg · ° C The physical value is numerically equal to the amount of heat that must be passed to the body weighing 1 kg in order for its temperature to change to 1 ° C, is called specific heat Substances. Specific heat Substances.

The specific heat capacity of the steel equally 500 J / kg · ° C. This means that for heating (cooling) steel m \u003d 1 kg per 1 ° C, the amount of heat, equal to 500 J. Specific heat capacity of a substance in various aggregate states, Various. For example, in water C \u003d 4200 j / kg · ° C; at ice c \u003d 2100 j / kg · ° С

Fastening What is the amount of warmth? What is measured? What does the amount of heat depend on? What is the specific heat capacity of the substance? What is a unit of specific heat capacity. The specific heat capacity of the lead is equal to 140 J / kg · ° C. What does this mean?

What is the specific heat capacity of zinc, brick, water? What amount of heat should be informant to these substances weighing 1 kg to heat at 1 ºС. Calculate the amount of heat (in calories and kilocalories). Necessary for heating by 1 ° C of water, the mass of which is 3; 4 kg.