Table of Contents
- 1 How do you find the mechanical equivalent of heat?
- 2 What is meant by mechanical equivalent of heat J and what are its units?
- 3 What is the mechanical equivalent of heat Joule’s constant?
- 4 What is the meaning of J in thermodynamics?
- 5 What is the dimensional formula of mechanical equivalent of heat?
- 6 What are the values of mechanical equivalent of heat in CGS and SI system?
How do you find the mechanical equivalent of heat?
By monitoring the temperature change of the cylinder, the thermal energy transferred into the cylinder can be calculated. Finally, the ratio between the work performed and the thermal energy transferred into the cylinder determines J, the mechanical equivalent of heat.
What is meant by mechanical equivalent of heat J and what are its units?
J=W/H. W is the mechanical work which is equivalent to heat energy H. Now in SI unit both work and heat are measured in Joules. So mechanical equivalent of heat J= Joule/Joule = 1 (dimensionless) In cgs units, heat is measured in calorie while work in erg.
What do you mean by mechanical equivalent of heat or Joule’s constant J?
In Joule’s Law, J is known as the mechanical equivalent of heat. From W=JQ, we can infer that if Q=1 then J=W. Hence the amount of work done necessary to produce a unit amount of heat is defined as the mechanical equivalent of heat.
What is mechanical equivalent of heat value?
4.1858 joules
(in any system of physical units) the number of units of work or energy equal to one unit of heat, as 4.1858 joules, which equals one small calorie.
What is the mechanical equivalent of heat Joule’s constant?
(Also called mechanical equivalent of heat.) The amount of mechanical work necessary to raise the temperature of a given mass of water by 1 degree Celsius. In modern usage it is the heat capacity of water, which at room temperature is 4186 Joules kg-1.
What is the meaning of J in thermodynamics?
The joule (/dʒaʊl, dʒuːl/ jowl, jool; symbol: J) is a derived unit of energy in the International System of Units. It is also the energy dissipated as heat when an electric current of one ampere passes through a resistance of one ohm for one second.
What is the mechanical equivalent of heat Joules constant?
What is the mechanical equivalent of spring constant?
The mechanical equivalent of spring constant in LC oscillating circuit is, k=1C.
What is the dimensional formula of mechanical equivalent of heat?
Dimensional Formula of Mechanical equivalent of heat (J) = M0L0T-0 . we can also say Mechanical equivalent of heat (J) is dimensionless quantity. SI unit of Mechanical equivalent of heat (J) is Joules/calorie (J calorie-1 ).
What are the values of mechanical equivalent of heat in CGS and SI system?
The mechanical equivalent of heat is the work done to produce unit quantity of heat. SI unit is joule per calorie (J/cal). CGS unit is erg per calorie (erg/cal).
Which electrical quantity is equal to mechanical quantity force constant?
Analogy of Force and Current: In this analogy, mechanical force is considered to be current in an electrical device. Hence, the equivalent quantity of mass in electricity is inductance.
How do you find the current in a LC circuit?
Finally, the current in the LC circuit is found by taking the time derivative of q(t): i(t)=dq(t)dt=−ωq0sin(ωt+ϕ).