Question

under what circumstances would you recommend revision of level?​

Answer 1

Answer:

#4N#

Explanation:

When the mass #m# is being accelerated with an acceleration of #a# ,we can say the net force acting in the direction of acceleration is #F=ma#

here,it is given that only one force #F# was applied to cause this acceleration, and also given, #m=2 Kg,a=2ms^-2#

So,#F=2*2=4N#

Answer 2

If the test tube holding the KOH solution is discarded from the experimental setup, the carbon dioxide produced during the respiration process shall not be consumed hence there would be no inflation in the water level.