AL (20) If the gap between railroad tracks closes tight, the tracks will buckle (see images)!...
AL (20) If the gap between railroad tracks closes tight, the tracks will buckle (see images)! 20 meter stretches of Iron (Steel) railroad track are laid with a 1-inch (2.54 cm = 0.0254m) gap between them at-30-deg. C. The first hot day afterwards, the rails sat in the hot sun and their temperature rose to 355K A) (10) The gap change between the tracks = B) Based on your answer above, will the tracks buckle OR NOT ?? YES/ NO (CIRCLE ONE) ANSWERS ON THIS PAGE. SHOW WORK ON THE OPPOSITE PAGE A2. (20) Choices, Choices! Since you are now immensely enjoying physics, you experiment in the kitchen before enjoying a great lobster dinner. You find five (5) IDENTICAL copper pots and a thermometer. Your experiment is to find (and confirm) which pot of WATER has the most Total Heat Energy (i. Q) available to cook the lobster!!): 1.(2) Write the formula for TOTAL Heat Energy in a substance 2. (15) Calculate& Compare TOTAL amount of Heat Energy in the WATER in each pot. 3. (3) THEN CIRCLE THE LINE for the WATER with the MOST Heat Energy. WATER TEMP. (K) WATER IN POT 18 kg 17 kg 16 kg 15 kg 14 kg OR 288K A) OR 305 324K 345K 370K OR C) D) OR (almost ready to boil) ANSWERS ON THIS PAGE. SHOW WORK ON THE OPPOSITE PAGE A3. A3. Our Cartoon Friends Again! Wiley Covote is atop the Empire State Building 380 meters above the street. He spots ROADRUNNER quietly pecking food on the sidewalk. Always wanting to finish off RR, WC drops a 10 kg. Iron cannon ball at the hapless bird. All the while, ground & air temperatures=300K 380m 1) (5) Find the ball's Kinetic Energy as it hits(??) the RR(??): 2) (15) Suppose WC again fails! The ball misses RR, & buries itself in the valk. When it ite IF all the ball's KE converts into heat, the ball temperature would be? K ANSWERS ON THIS PAGE. SHOW WORK ON THE OPPOSITE PAGE