A dataset appears linear when plotted as log(y) vs. log(x). The logarithms are base 10. If the line of best fit has a slope of 3, what is the relationship between x and y? y ~ x^3

y ~ 10^(3x)

y ~ x + 3

y ~ 3x

y ~ 3^x

Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]