The thermal coefficient of linear expansion labo 5. if flat strips of iron and brass were bonded together and this bimetallic strip were heated. what would be observed? justify your answer, and draw a sketch of the situation. (hin: see appendix a. table a3, for a's.) 6. a pyrex graduated cylinder has a volume of exactly 200 ml at 0 °c. if its temperature is increased to 100 c, will its volume increase or decrease? compute the change in volume. 7. assume a metal rod with an initial length l, is heated through a temperature increase of at to a length ly and then cooled to its initial temperature-that is, through a temperature decrease of-δ t (same δ t increase and decrease). call the final length of the rod l2 after this thermal cycle. (a) show that eq. 19.3 implies that l.-l, [i-(adn2], that is、g+ 4 (b) what is the implication if the rod were taken through a number of such thermal cycles?

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

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

What effects result when there is an impact between earth and an asteroid? check all that apply. a.massive flooding. b.extinction of many life forms.c.major earthquakes change in average global temperature.d. giant dust cloud