Consider a school with four classes and two periods during which the classes can be scheduled. The classes are named A, B, C, and D. Each class must be scheduled in exactly one of the two periods, and the following pairs of classes can not be scheduled at the same time: (B, C), (A, D), (C, D), (B, A).

Express the scheduling problem as a Boolean expression. That is, give a Boolean expression that is true if and only if there is a feasible schedule for the classes that satisfies all the constraints.

Technician a says that if a valve is open when a piston rises to the very top of a cylinder, the piston may actually strike the valve head and cause serious engine damage. technician b says if the camshaft is located in the engine block, then the engine is called an overhead valve engine, ohv engine, or an in-block camshaft. who is right? a. b only b. both a and b c. a only d. neither a nor b

What is a costume plot? why is it important to a film or theater production?

[a] create a class called “cycle” which has two instance integer variables as properties, “numberofwheels” and “weight.” create a constructor with two parameters, using the same variable names in the parameter list. assign each variable to numberofwheels” and “weight” respectively. write a separate application to test the class and display its properties. note: do not change the names of the instance variables or the variables listed in the constructor’s parameter list. [b] edit your class cycle by adding a default constructor which will assign the default values of 100 to represent the numberofwheels, and 1000 to represent the weight, by invoking a call to the other constructor. modify your application created in [a] to test the class.