Should be working now, sorry about that!
Teach: Gravitation and orbitsHello Tim, this link is still not working
Teach: Gravitation and orbitsIn question no. 2 are you assuming room temperature to be 20 or 25?If we assume room temperature to be 25 then to me:Specific heat capacity of metal = c = ?heat lost by metal = heat gained by water.0.5 c (500 -...
B1 test: Thermal energy transfersIn question no. 2 are you assuming room temperature to be 20 or 25?If we assume room temperature to be 25 then to me:Specific heat capacity of metal = c = ?heat lost by metal = heat gained by water.0.5 c (500 -...
B1 test: Thermal energy transfersYou are a fantastic physicist and wonderful teacher, Benson! I'll add a note to teachers on the webpage.
E2 test: Wave nature of matterHi Team, the 1MV pd in Q1 would result in relativistic speeds, so doesn't that make the calculation as done above invalid? Perhaps change the pd to 10kV or 1kV?
E2 test: Wave nature of matterHi Benson, the Guide includes these understandings: "that the stability of stars relies on an equilibrium between outward radiation pressure and inward gravitational forces; that fusion is a source of energy in stars; the conditions leading to fusion...
E5 MCQs: Stellar evolutionThanks Danny. I left those words (except isochoric) in their material (as FYI, because they will likely encounter the terms in a lot of "legacy" resources), but told them they wouldn't need to remember them for IB exams. Fingers crossed I'm right...
B3 MCQs: Gases explanations and graphsHey Benson, thanks for catching these issues! I've made some changes to Q1 and Q2. They should be working better, although there isn't really a good way to allow for multiple correct answers (e.g., force OR acceleration could both make sense for a...
B3 MCQs: Gases explanations and graphs
Danny
Site authorHello! I think room temperature is assumed to be 20°C, so the block cools from 500°C to 25°C while the water warms from 20°C to 25°C. That gives the answer 442 J kg⁻¹ K⁻¹.
B1 test: Thermal energy transfers