A tray of ice is put in the freezer. The ice cube tray holds 16 cubes, each 1 oz. How much energy must be removed from the ice to freeze it from room temperature (25 C) to -5 C?

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete

im sorry i dont know

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards