For a science experiment you need to electroplate zinc onto both sides of a very thin, 1.00 1.00 copper sheet. You want the zinc thickness to be 140 , and you know that the charge carriers in the ionic solution are divalent (charge ) zinc ions. The density of zinc is 7140 . If the electroplating apparatus operates at 1.40 , how long will it take the zinc to reach the desired thickness?
Depending on cycle and riding style- the fronts last twice or 3 times as long as rear tire, as you apparently found out. Common to use a different tire on back when it needs replacement, just get one usable for the conditions you give it-- as in don't put a soft rubber racing tire on a cycle used half the time on gravel roads, don't put a trial/universal on a cycle used for twisty racing. For street use on pavement mostly- lot of decent brands and patterns available. If you cruise at 75 with passenger and 200 pounds of camping gear a radial high load capacity makes sense. If you're running 90 to 110 on interstate and country pavement then a soft rubber racer tread/compound may be more appropriate. I had Avon triangle treads on back of shafties with front continental plain treads - handled curves and held weight good, got to 100 a few times like coming back from Sturgis. Used Beck universals on back and front of old panhead , handled ok, were cheap sale deal at the time to replace really bald rear.
Yes it's ok to mix brands just ensure they are both radials and not cross ply and radial mix
Yes, Bikes use 2 types of tires, front for steering and rear for power. Try not to put a steering tire in the rear, or vice -versa.
coach them that even the iPhone you have now would be nicely suited with communications on your Grand young infants obtainable scurrying approximately on the moons of Jupiter Saturn. you may deliver them a tweet and it use frequently merely takes (??) for them to get it and deliver returned. Do the mathematics and notice how long it at present takes radio waves to commute. i think of that is relating to comparable to hurry of light. And if it takes 8.3 min.? for mild from the solar to realize earth verify long it may take to correspond returned and forth from another action picture star device. yet once you have a relative which you will call a million/2 way worldwide huge for the duration of the presentation call them, write on the chalkboard how long that took. For sending to different galaxy platforms you fairly your might desire to be sending out the pictures now.
