The table below shows the cost of downloading songs from a website. \text{Number of Songs}Number of Songs \text{Total Cost}Total Cost 66 \$2.10$2.10 1010 \$3.50$3.50 1616 \$5.60$5.60 What is the constant of proportionality between the total cost and the number of songs?

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0

For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.