A60-kg uniform board 2.4 m long is supported by a pivot 80 cm from the left end and by a scale at the right end (see the fig. below). (a) how far from the left end should a 40-kg child sit for the scale to read zero? (b) where should the child sit if the scale is to read (i) 100 n and (ii) 300n?

hello, i am papaguy.

i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!

c) power lifting, will be your answer.

,

deku ❤

answer///scientific method;