A mass of 2000 kg is raised through a height of 20 metres in 20 seconds. What is work done and power developed.​

What effect might melting sea ice have for people who live in coastal areas?

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.

Fossil fuels are organic compounds that are made from