Physics paper 1 2023_2024 100% Correct!!

Question 1.1 - ANSWERIncrease Decrease What equation links current power and resistance? - ANSWERP=I^2R Calculate the resistance - ANSWERP= I^2R work out calc Write down the equation which links efficiency, total energy input and useful energy output? - ANSWEREfficiency = useful energy output/total energy input Calculate the useful energy output from this power station? - ANSWERX both num together Suggest why the student left the themometer in iron block for a few min before recording initial temp? - ANSWERTo make sure the thermometer had enough time to display the correct temp What effect will adding insulation have had on the investigation? - ANSWERA and B What is meant by direct potential diff? - ANSWERThe driving force comes directly from the battery to the battery carrying current through the circuit in 1 direction. What equation links charge flow, energy and potential diff? - ANSWERE=QV Calculate the charge flow? - ANSWERDivide the num given Explain the changes in the arrangement and movement of the particles as the ice melted and the temp increased to 5 degree? - ANSWER. As the temperature increases from 0 degrees Celsius to 5 degrees . The ice gained thermal energy . This thermal energy was converted into kinetic energy . This allowed the particles in the ice that had a fixed shape and volume to vibrate more . By vibrating more the bonds between the molecules were broken. . Melting the ice and changing state of matter . In solid block of ice particles have a high density and a fixed shape . Melted ice particles have weaker bonds and is less dense . Temp remains constant, internal energy increases 4.1 - ANSWER 4.2 - ANSWER