In the 4X 100m relay, how long is the acceleration zone a) 20m
b)30m
c)40m
d)100m

subject is physical education :)​

Which planet do you think would be easiest for humans to colonize some day?

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.

Diverging mirrors and lenses always produce images