Pls help me, not sure why my brain stopped working. all of it would be good, sorry about the lighting

Due in 40 explain in terms of frame of reference if you’re inside a moving train everything on the outside can seem to be moving

What are two examples of phase changes that skip a phase during transition?

Water flows through a garden hose which is attached to a nozzle. the water flows through hose with a speed of 2.19 m/s and through the nozzle with a speed of 19.8 m/s. calculate the maximum height (in m) to which water could be squirted if it emerges from the nozzle and emerges with the nozzle removed.