Hi I am in desperate need of help hahaha <3 The initial temperature of the mixture was +20 °C.
The mixture froze at -1.5 °C.
A total of 165 kJ of internal energy was transferred from the mixture to cool and freeze it.
Specific heat capacity of the mixture = 3500 J/kg °C
Specific latent heat of fusion of the mixture = 255 000 J/kg
Calculate the mass of the mixture.
Give your answer to 2 significant figures

Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?