I know that every domain in iron has a net magnetic field, and when an external field is applied, the domain fields line up to create a net magnetic field. Why does this happen to iron and not other metals? What are the electrons doing? Educate me! Thank you.
don't be afraid to hit the front brakes, those are where MOST of your braking power is, why on earth would you be afraid to use them? you can munch down on them as hard as you can and all it will do is stop you faster, you are supposed to use both front and rear, the front does most of the braking and the rears help out a little and help keep her going straight. keep your tires aired up always, it makes all the difference in handling.
Both dia- and para- magnetic materials are considered as non-magnetic because they exhibit magnetization only in presence of an external field. ? Certain materials possess permanent magnetic moments even in the absence of an external field. ? This is result of permanent unpaired dipoles formed from unfilled energy levels. ? These dipoles can easily line-up with the imposed magnetic field due to the exchange interaction or mutual reinforcement of the dipoles. These are chrematistics of ferro-magnetism. ? Materials with ferro-magnetism (Examples: Fe, Co, Ni, Gd) possess magnetic susceptibilities approaching 106. ? Above the Curie temperature, ferro-magnetic materials behave as para-magnetic materials nptel.iitm.ac.in/courses/Webcours.
I am surprised you are capable of typing your question! maybe you should have a rest between the answers. If I find you and your broken motorbike, I will kick you into the kerb.
Step 1 - slow down (I know, I know - I can't do it either). Step 2 - watch out for cars (riding courses tell you to pretend to be invisible to other traffic, after 20+ years of riding, I just pretend like people are actively trying to hit me), try to predict what they are going to do. Step 3 - treat every blind curve like a gravel strewn, improperly banked hairpin with a truck coming at you in your lane. Step 4 - replace worn tires and always keep them properly inflated. Slightly under-inflated tires will actually give you more contact with the road, but you increase the probability of losing control as the tire rolls on the sidewall. Step 5 - maintain your brakes, worn pads/rotors, piston seals, low fluid - all can cause your brakes to fade or fail altogether. Step 6 - roughly 70% of your braking power comes from the front brake. If you need to stop suddenly, start by applying the front brake firmly, evenly, but don't lock it up, and then the rear brake (I always downshift too - allowing the engine to slow the bike down). Step 7 - If you do lock it up, it will skid, so you should practice a few times in an empty parking lot to know what its going to do. Get up to speed, and brake hard while downshifting. Try not to wipe out, but learn what your and your bikes limitations are, and try to respect them. Step 8 - whenever possible, avoid braking hard by paying attention and looking for 'escape routes'. Bikes tend to be light and can stop fast, but the car behind you can't. Consider taking a rider training course. They can give you a break on your insurance, and might just save your life - and for gods sake, maintain your bike.
