Hello Good Day, (PHYSICS)

Can you help me here? Im a late enrolee and trying to catch up. Thanks!!

Given two metal strips with the same initial length, steel and aluminum. When heated in the same way, which metal will expand more? a steel - 1.2 x 105cl a aluminum - 2.3 x 105 51 O Steel Aluminum O They will both expand by the same amount O) Cannot be determined, not enough information The greater the coefficient of thermal expansion O) The less it will expand when heated. O The less it contracts when cooled. O The more it will expand when heated. The Golden Gate Bridge is said to be 1275m long at -15"C. Assuming that the bridge is made entirely of steel, what is the probable change in the length of the bridge during a hot day at 40*C? a steel - 1.2 x 10# C 1 -0.84m O O 0.84m O WRE Q- C WURF'O How many Kilocalories are there in 1565 Joules? O 1.24 kcal O 0.37 kcal O