A notice appeared on your front door – apparently your sidewalk is covered in ice and posing a hazard. Being poor college students, how much will it cost to melt the ice? • Your sidewalk is 1 m wide, 20 m long, and has (on average) a 6 mm thick ice coating. • The outside air temperature will not get above -15 °C any time soon. • Salt costs $1.60/kg. • Assume ice has a density of 0.92 g/cm
A notice appeared on your front door – apparently your sidewalk is covered in ice and...