Physics Homework Aid

Physics holds significant importance among the natural sciences, elucidating life's wonders and ranking among the most challenging subjects to master.

QuestionAI is a rich and user-friendly physics problem solver for novice physicists, enabling exploration of atomic properties and interactions, alongside molecular trajectories under various forces. Furthermore, you can delve into the mysteries concealed amidst galaxies with fellow physics enthusiasts. Boldly pose your conjectures and queries to the AI, and authoritative answers will readily emerge.

What (with reference to radioactivity) is meant by the word CONTAMINATION? [NONE of these] The RADIATION of the material causing damage to living cells DIRECTLY The negative impact of ACQUIRING nuclear material for the PRODUCTION of useful missile material The UNWANTED presence of materials containing radioactive atoms on OTHER materials

. - Answer the questions Use the line graph to answer the questions. Distance travelled by a runner 160 y 140 120 100 E 80 t 60 40 20 0 10 20 30 40 50 60 Time (s ) How far had the runner travelled after 20 s? How far had the runner travelled after 50 s? How long did it take to run 100 m? How long did it take to run 130 m? How far did the runner travel between 25 s and 60 s? In which 10-second period was the least distance covered? square s to 60 m [1] square m [1] square S [1] square S [1] square m [1] square [1]

Lucy wants to test the hypothesis "The colour of the container affects how quickly hot water cools down." The independent variable is the __ of the container . What one word completes the sentence?

Is sugar cane a renewable or non-renewable source of energy? Tick one box. renewable source square non-renewable source square Give a reason for your answer.

(a) Use words from the box to answer the questions below. chemical & electrical & gravitational potential kinetic & light & sound & thermal (i) What is the useful energy transfer when coal is burnt? qquad energy is transferred to qquad energy (ii) Some of the energy stored in coal is wasted when it is burnt. Give the name of one type of energy released that is not useful. qquad