Answer:
There were many examples of this. One of the most well-known not reversible reaction is a precipitation reaction, in which an insoluble solid is formed from two aqueous solutions. An example is the reaction between silver nitrate and sodium chloride which forms a silver chloride precipitate.
Vf= 60m/s
vs = 15m/s
t=20s
a = vf-vs/t
a = 45m/s / 20s
a = 2,25 m/s²
S = vs *t + 1/2 a*t²
S = 15 m/s*20s +1/2 * 2,25m/s² * 400 s²
S = 300m + 450m
S = 750m
v average = 750m/20s
v average = 37,5 m/s
A. Material, because it's the same for each version of that element.
Answer:
Solution given:
force=20N
distance travelled=6m
work done=force *displacement=20*6=120joule
<u>Work</u><u> </u><u>done</u><u>=</u><u>1</u><u>2</u><u>0</u><u>j</u><u>o</u><u>u</u><u>l</u><u>e</u><u>.</u>