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.

In which process do particles move closer together but remain in motion? A condensation B diffusion C evaporation D freezing A B C D

Starting from one shore , you row a boat across a narrow river to the other shore The river is 35.0 m wide. As you row, the river current causes your boat to move down the river a distance of 45.0 m. What is the resultant displacement of your boat? Determine the magnitude of the displacement. 325 m 45.4 m 35.6 57.0m

2. In this question you must show all stages of your working. Solutions relying on calculator technology are not acceptable. A particle is moving along a straight line. At time t seconds, tgt 0 the velocity of the particle is vms^-1 where v=2t-7sqrt (t)+6 (a) Find the acceleration of the particle when t=4 When t=1 the particle is at the point X. When t=2 the particle is at the point Y. Given that the particle does not come to instantaneous rest in the interval 1lt tlt 2 (b) show that XY=(1)/(3)(41-28sqrt (2)) metres.

Figure 1 Figure 1 shows the speed-time graph for the journey of a car moving in a long queue of traffic on a straight road. At time t=0, the car is at rest at the point A. The car then accelerates uniformly for 5 seconds until it reaches a speed of 5ms^-1 For the next 15 seconds the car travels at a constant speed of 5ms^-1 The car then decelerates uniformly until it comes to rest at the point B. The total journey time is 30 seconds. (a) Find the distance AB. (b) Sketch a distance-time graph for the journey of the car from A to B. __ (3) (3)

Why are tasers non-lethal? They have a high voltage and low current They have a low voltage and a high current They have a high voltage and a high current They have a low voltage and a low current