Hi am struggling with specific latent heat questions: 1. how much energy is required to melt 40 kg of lead
2. a 3.0kW kettle contains boiling water and is on top of balance, it is turned on for 2 minutes, and the reading changes from 1.487 kg to 1.343 kg. use this energy to calculate the energy required to boil 1kg of water

Explanation:

Double integrals are a way to integrate over a two-dimensional area. Among other things, they lets us compute the volume under a surface.

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.

radiation warms things up temp rises convection currents air circ windy weather