In the sandwiches mode, select the "cheese sandwich" option and observe the equation given for the preparation of a cheese sandwich. when the number of bread slices and cheese slices is set to "0," you will see that there is "no reaction." now, in the equation, set the number of bread slices to "2" and the number of cheese slices to "1." you will see that the product formed by these three elements is one cheese sandwich with two slices of bread and one slice of cheese. this equation can be written as

58 km per hour : d

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i believe the answer is three water molecules

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.