4. Answer questions a and b according to the scatterplot: a $700 $600 $500 $400 Sales $300 $200 $100 $0 10 12 14 16 18 20 22 24 26 Temperature °C a) What type of correlation is occurring between temperature and the number of sales? b) Fill in the blanks with either increases" or "decreases" As the temperature the number of sales

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise