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.
- Q3. In 1610, the Italian scientist, Galileo observed four bright moons near Jupiter. Each night the moons moved. (i) The Sun and stars are light sources, and the planets are seen by reflected light. Explain how we can see the moons of Jupiter. __ ...................................................................... ......
- 7. Helen cycles for 20 minutes at 5m/s and then for a further 10 minutes at 4m/s (a) How far does she cycle altogether? (b) Draw a distance-time graph for her ride
- 5. Mary sprints 200 m in 30 seconds, rests for 45 seconds and then walks back in 1(1)/(2) minutes to where she started the race. (a) Draw a distance-time graph for Mary. (b) Calculate the speed at which Mary runs. (c) Calculate the speed at which Mary walks.
- What one word completes this sentence? Pressure in a liquid depends on the __ of the liquid. Enter your answer
- (c) 80% of this change in gravitational potential energy has been transferred to the student's kinetic energy store. How much has the student's kinetic energy store increased after falling 20.0 m? Kinetic energy gained= (d) Calculate the speed of the student after falling 20.0 m. Give your answer to two significant figures. __ (e) At the lowest point in the jump , the energy stored by the stretched bungee cord 24.5 kJ. The bungee cord behaves like a spring. Calculate the spring constant of the bungee cord. Use the correct equation from the Physics Equation Sheet. __ ...................................................................... Spring constant=