What is the mass of 52N shopping bag?
5.3 kg
5.3 N
509 kg
509 N

Weight = mass × acceleration due to gravity, so

52 N = m (9.8 m/s²)

m = (52 N) / (9.8 m/s²) ≈ 5.3 kg

Heat required to raise the temperature of water is given as

here we have

m = 100 g = 0.100 kg

s = 4183 J/kg C

now we can use the above equation

so here it requires 20920 J heat to raise the temperature of 100 g water by 50 degree C