Our two intrepid relacar drivers are named pam and ned. we use these names to make it easy to remember: measurements made by pam are primed (x', t') and those made by ned are not primed (x, t). v is the velocity of pam (the other frame of reference) as measured by ned. what is the interpretation of v'?
-the velocity of pam as measured by pam.-the velocity of pam as measured by ned.-the velocity of ned as measured by ned.-the velocity of ned as measured by pam.

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.

Aa a of 22 m/s at an of 36.9 .be . a. b. c. (3)x y of? (3)go? (4) () it to to ?

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.