Description 1. How many grams of steam in a boiler at 100 C can be condensed to water at 100 C by the removal of 1520 cal of heat? 2. How many calories of heat are needed to change 625 g of ice at -24.0 C to steam at 132.0C? 3.Find the increase in length of copper tubing 200.0 ft long at 40.0F when it is heated to 200.0F. 4. A brass cylinder has a cross-sectional area of 482 cm2 at -5 C. Find its change in area when heated to 95C. Description i 1. (a) What is the frequency of a light wave with wavelength 5.00 * 10-7 m and velocity 3.00 * 108 m/s? (b) Find the period of the wave. 2. Find the wavelength of a wave traveling twice the speed of sound (speed of sound = 331 m/s) that is produced by an oscillator emitting 63 pulses every 8.3 * 10-6 min. 3. A sound wave is transmitted through water from one submarine, is reected off another submarine 15 km away, and returns to the sonar receiver on the rst submarine. What is the round-trip transit time for the sound wave? Assume that the water temperature is 25 C. 4. A train traveling at a speed of 40 m/s approaches an observer at a station and sounds a 550@Hz whistle. What frequency will be heard by the observer? Assume that the sound velocity in air is 345 m/s. (You do not have to submit this)