Acarbon resistor is to be used as a thermometer. on a winter day when the temperature is 3°c, the resistance of the carbon resistor is 217.6 2 ω. what is the temperature on a spring day when the resistance is 215.3 2 ω? (take the temperature coefficient of resistivity for carbon to be a-5.00 x 10^-4°c^-1) (give your answer in decimal using "degreec" °c) as unit)

Ok i am attempting to my niece attach a galvanized wire (like a tether for a dog) at the corner of two fences, making a tightwire if you will and we drilled a hole in a softball and she hits it. the ? and problem is that we can not get the wire taunt enough where it doesnt sag after hitting the ball once, and the wire sags and wobbbles. its a 15 ft rubber covered galvanized wire and one can adjust the length of the placing of the wire by having it make the corner of 2 fences become a it can be adjusted, however, with all our human strength and pliers we could not make it taunt as possible. is there anything other that attaching it to a car to do this. sorry abt the length but it would mean the world to my niece if i could solve this came up with the entire idea herself, and she is 14 and paid for the wire and did as much work as i did drilling a hole through a softball wide enough for attaching piece at each end of the wire that clips on to the fence. . any ideas welcome if serious. but awesome if it is a fact. much obliged. bucky bukowski buckman

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects