Question

block of iron weighing 100 kg and having a temperature of 100°C is immersed in 50 kg of water at a temperature of 20°C. What will be the change of entropy of the combined system of iron and water? Specific heats of iron and water are 0.45 and 4.18 kJ/kg K respectively.

Answer 1

A rabbit is 4m away from its burrow. Each hop takes it 0.4 farther from the burrow. The following diagram shows that there is a tasty plant that is 6m from the burrow.

Which equation can we use to determine h, the number of hops it takes the rabbit to reach the plant?

1% 475