Things you always wanted to know the answer to [Vol. 2]
Discussion
Why do car fuses pop? Setting off back from the NE on Saturday morning I fired the car up and there was a pop and the satnav and dashcam died. I changed the fuse on the cig lighter when I got home and all is well again, everything works properly, which suggests it wasn't the nav or the dashcam misbehaving.
markmullen said:
Why do car fuses pop? Setting off back from the NE on Saturday morning I fired the car up and there was a pop and the satnav and dashcam died. I changed the fuse on the cig lighter when I got home and all is well again, everything works properly, which suggests it wasn't the nav or the dashcam misbehaving.
overloaded , chafed wired or faulty gizmosteveo3002 said:
markmullen said:
Why do car fuses pop? Setting off back from the NE on Saturday morning I fired the car up and there was a pop and the satnav and dashcam died. I changed the fuse on the cig lighter when I got home and all is well again, everything works properly, which suggests it wasn't the nav or the dashcam misbehaving.
overloaded , chafed wired or faulty gizmomarkmullen said:
Why do car fuses pop? Setting off back from the NE on Saturday morning I fired the car up and there was a pop and the satnav and dashcam died. I changed the fuse on the cig lighter when I got home and all is well again, everything works properly, which suggests it wasn't the nav or the dashcam misbehaving.
Or fuse at the end of its life, treat as a consumable. Especially if at the edge of working load.K.
Asterix said:
What has a 'Dutch Oven' (the under the covers bottycough) got to do with Holland?
It's a nickname, derived from the cooking pot of the same name (which was produced in the Netherlands) - which has a tight fitting lid. Presumably the humour is derived from things being trapped.TheEnd said:
You'd be moving north with respect to the ground, and at the same speed as the air, so it'd be like no breeze (providing the wind is perfectly moving en masse at the exact same speed as the car)
You get a similar effect on sail boats. You're speeding along through the water and the sails are full so you know there's a strong wind blowing, except where you are there isn't hardly anything at all.Shaolin said:
TheEnd said:
You'd be moving north with respect to the ground, and at the same speed as the air, so it'd be like no breeze (providing the wind is perfectly moving en masse at the exact same speed as the car)
You get a similar effect on sail boats. You're speeding along through the water and the sails are full so you know there's a strong wind blowing, except where you are there isn't hardly anything at all.Ahh, but is the boat on a conveyor belt?
MissChief said:
Ahh, but is the boat on a conveyor belt?
You jest but we had toys out the pram last time someone brought up the puzzle mentioned here: http://newt.phys.unsw.edu.au/~jw/sailing.htmlMostly because people don't understand relativity and boats tacking upwind.
Shaolin said:
TheEnd said:
You'd be moving north with respect to the ground, and at the same speed as the air, so it'd be like no breeze (providing the wind is perfectly moving en masse at the exact same speed as the car)
You get a similar effect on sail boats. You're speeding along through the water and the sails are full so you know there's a strong wind blowing, except where you are there isn't hardly anything at all.
DannyScene said:
Based off something someone said previously, if you are in a sailing boat and you want to head south but the wind is blowing north do you have to wait for the wind to change?
I don't understand at all how a sailing boat can go up wind although I imagine it's a simple answer
You can't go directly into the wind. But if you point at about 45deg to the wind and position the sails to bounce the wind over the back of the boat, then your keel prevents the boat going sideways and you travel forwards. So you can keep zig sagging and travel upwind.I don't understand at all how a sailing boat can go up wind although I imagine it's a simple answer
Dr Jekyll said:
DannyScene said:
Based off something someone said previously, if you are in a sailing boat and you want to head south but the wind is blowing north do you have to wait for the wind to change?
I don't understand at all how a sailing boat can go up wind although I imagine it's a simple answer
You can't go directly into the wind. But if you point at about 45deg to the wind and position the sails to bounce the wind over the back of the boat, then your keel prevents the boat going sideways and you travel forwards. So you can keep zig sagging and travel upwind.I don't understand at all how a sailing boat can go up wind although I imagine it's a simple answer
DannyScene said:
Based off something someone said previously, if you are in a sailing boat and you want to head south but the wind is blowing north do you have to wait for the wind to change?
I don't understand at all how a sailing boat can go up wind although I imagine it's a simple answer
Boats don't get blown, they get sucked. The sail forms a similar shape to an aircraft wing and uses the equivalent of lift.I don't understand at all how a sailing boat can go up wind although I imagine it's a simple answer
If the wind is blowing from the north then you can head north east or north west quite easily. The wind pulls the boat and the keel resits the pull in that direction and gives you forward momentum.
VladD said:
DannyScene said:
Based off something someone said previously, if you are in a sailing boat and you want to head south but the wind is blowing north do you have to wait for the wind to change?
I don't understand at all how a sailing boat can go up wind although I imagine it's a simple answer
Boats don't get blown, they get sucked. The sail forms a similar shape to an aircraft wing and uses the equivalent of lift.I don't understand at all how a sailing boat can go up wind although I imagine it's a simple answer
If the wind is blowing from the north then you can head north east or north west quite easily. The wind pulls the boat and the keel resits the pull in that direction and gives you forward momentum.
I'm not sure if I should be embarrassed or not haha
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