Please help immediately A uniform stick AB can be balanced on a knife edge 10cm from one end when a weight of 200N is hung from that end .When the knife edge is removed 5cm further from that end, the 200N weight has to be moved to a point 8.75cm from the knife edge to obtain a balance. Find the length of the stick and its weight.

please draw the diagram before solving

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.

Abox is sliding on a frictionless surface when it suddenly begins to rain heavily. if the downpour of rainfall falls vertically into the box

How can a cyclist's acceleration change even if its velocity remains constant?