A physicist at a fireworks display times the lag between seeing an explosion and hearing its sound, and finds it to be 0.600 s. (Enter your answers to at least four decimal places. Use the following relationship between Kelvin and Celsius: T(K)= T(°C) + 273.15.) (a) How far away (in m) is the explosion if air temperature is 24.0°C and if you neglect the time taken for light to reach the physicist? 207.19 x m (b) Calculate the distance to the explosion (in m) taking the speed of light into account. Note that this distance is negligibly greater. 207.198 x m
Energy transfer
The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.
Molar Specific Heat
Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)
Thermal Properties of Matter
Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.
(a)
The speed of sound in air is expressed as a function of the temperature of air is
Where,
is the temperature of the air .
Given,
So,
Speed of sound
Given,
The time interval between seeing the explosion and hearing the its sound is
So,
The distance to the explosion(ignoring time time taken for to reach the physicist) is
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