water in an electric kettle is brought to boil in 180s by raising its temperature from 20°c to 100°c. it then takes a further 1200s to boil the kettle dry. calculate the specific latent heat of vaporisation of water, l,at 100°c. the specific heat capacity of water is 4200j/kg/k.
state any assumptions made.

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.

As the distance from a magnet increases, what happens to the magnet force?