Write a method stutter that takes an arraylist of strings and an integer k as parameters and that replaces every string with k copies of that string. for example, if the list stores the values ["how", "are", "you? "] before the method is called and k is 4, it should store the values ["how", "how", "how", "how", "are", "are", "are", "are", "you? ", "you? ", "you? ", "you? "] after the method finishes executing. if k is 0 or negative, the list should be empty after the call.

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.