a block weighing 2,000 kn is pushed along a surface. a push force of 800 kn is required to just get the block moving and a push force of 600 kn is required to keep the block moving at a constant velocity. determine the coefficient of static friction between the block and the surface. determine the coefficient of kinetic friction between the block and the surface.

What are the necessary conditions for fusion?

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 insurance would contradict the big bang theory