How much heat must be added to 0.45 kg of aluminum to change it from a solid at 130 C to a liquid at 660 C (its melting point)? The latent heat of fusion for aluminum is 4.0 105 J/kg.
GALILEO’S CONTRIBUTIONS TO SCIENCE ● Science is for everybody ○ not just an elite few who read Latin ○ science involves active experimentation ■ more than a collection of facts and deductions ■ experiment becomes the ultimate authority ● science should “work” everytime ● science is universal ○ applies to both earth and space ○ previously there were separate laws ● science is linked to math ● science makes great progress by simplifying ● science is concerned with “how” ○ we don’t need to know why something happens to study and describe it ● motion is relative to the observer ● geometric reasoning
