Use the algorithm below to answer the four questions:
algorithm mystery(n)
//input: a nonnegative integer n
s ← 0
for i ← 1 to n do
s ← s + i * i
return s
a.) what does this algorithm compute?
b. ) what is its basic operation?
c.) how many times is the basic operation executed? (solve the summation.)
d.) what is the efficiency of this algorithm?

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.

Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?

Aplate of dimensions 3 m x 3 m is placed 0.37 mm apart from a fixed plate. the plate requires a force of 2n to move at speed of 45 cm/s. evaluate the viscosity of the fluid in between the plates