An airplane starts at rest and accelerates down a runaway for 20s. at the end of the runway, its velocity is 80m/s north. what is its acceleration?

What is the equation for electrical work?

8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging