Q4 ( Calculate the heat energy required to convert 10 kg of ice which is initially
at - 30 °C completely into water at 0 °C. Assume the specific heat
capacity of ice is 2.1 kJ/(kg °C) and the specific latent heat of fusion of
ice is 335 kJ/kg

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

a 2,000 calorie based diet.