Engineering, 30.11.2019 04:31 TierraNicole6865
Define a class named timespan. a timespan object stores a span of time in hours and minutes (for example, the time span between 8: 00am and 10: 30am is 2 hours, 30 minutes). each timespan object should have the following public methods: timespan(hours, minutes) constructs a timespan object storing the given time span of hours and minutes. gethours() returns the number of hours in this time span. getminutes() returns the number of minutes in this time span, between 0 and 59. add(hours, minutes) adds the given amount of time to the span. for example, (2 hours, 15 min) + (1 hour, 45 min) = (4 hours). assume that the parameters are valid: the hours are non-negative, and the minutes are between 0 and 59. add(timespan) adds the given amount of time (stored as a time span) to the current time span. gettotalhours() returns the total time in this time span as the real number of hours, such as 9.75 for (9 hours, 45 min). tostring() returns a string representation of the time span of hours and minutes, such as "28h46m". the minutes should always be reported as being in the range of 0 to 59. that means that you may have to "carry" 60 minutes into a full hour.
Answers: 1
Engineering, 03.07.2019 14:10, BardiFan
Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.
Answers: 3
Engineering, 04.07.2019 18:10, viicborella
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.
Answers: 1
Engineering, 04.07.2019 18:10, niyawilliams23
Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10
Answers: 1
Define a class named timespan. a timespan object stores a span of time in hours and minutes (for exa...
Biology, 18.11.2019 22:31
History, 18.11.2019 22:31