answer any three questions
Answers
Explanation:
22.the heat required to convert a solid into a liquid or vapour, or a liquid into a vapour, without change of temperature.
23.Double walled container are used to make ice box because the space two wall is kept with a vacuum which provides a insulation cover to the inner box, therefore the outer heat of the box can't after inside the box and melt the ice..
24.Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion. Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.
Answer:
22.Latent heat : Amount of energy required to change the state of the system without changing the temperature
24. Distance - scaler quantity
lenght of the path converted by a
body irrespective of direction
can be positive or zero
depends on the path followed by
the moving object
displacement- vector quantity
shortest distance measured
between the intial and final position
can be negative position or zero
independent on the path
followed
not sure about the 23 answer....hope it helps!!