Afirefighter mounts the nozzle of his fire hose a distance 36.9 m away from the edge of a burning building so that it sprays from ground level at a 45° angle above the horizontal. after quenching a hotspot at a height of 8.85 m, the firefighter adjusts the nozzle diameter so that the water hits the building at a height of 17.9 m. by what factor was the nozzle diameter changed? assume that the diameter of the hose stays the same, and treat the water as an ideal fluid.

Natural forces that can alter ecosystems include seasons and climate changes. t or f

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.

You have 80 g of 60oc water and 80 g or 10oc water. what is the final temperature when the two are mixed? explain.