1) a fire hose shoots water horizontally from the top of a buliding toward the wall of a building 31 m away. The water leaves the nozzle of the hose at speed of 6.4 m/s. How far bellow the the level of the nozzle does the water hit the wall?2) A 5 kg wagon is pulled along the level ground by a rope inclined at 40 degree above the horizontal. A friction force of 20N opposes the motion. How large is the pulling force if the wagonis moving with an acceleration of 0.3 m/s/s?3. If a tow rope is pulled upward at an angle of 27 degree to the horizontal with force of 365N, it can slide a 55.2 kg box along the floor at a constant speed of 20.5 cm/s. How large a friction force opposes the box motion?my answers is 1)4.425 m, 2) 28N and 3) 325.2 Nis my answers correct, if not please tell me the way to get the right answersthank you
I've spoken with guys who recharge extinguishers and they say the ones with the plastic heads aren't worth recharging but ones with the metal heads are. I think the plastic ones are more subject to leak down. Later.
Yes!! Because not only will the pressure expel the foam, the vacuum of space will also suck it out. So actually, a fire extinguisher will work better in space than on Earth. But you wouldn't need to use one in space because fire can't be in space unless there is oxygen present. And even if there was fire, it would need a continuous supply of oxygen to keep burning. Without it, the vacuum of space would suck away the oxygen present and put out the fire.
The extinguisher would most likely expell, however, in space, you cannot have a fire. Fire needs oxygen to burn, and there is no oxygen in space.;)
