8. A car reaches 80 kilometers per hour, then
suddenly crashes into the concrete wall. Without
a seat belt, the crash test dummy slams into the
car's dashboard because
he crash test dummy's kinetic energy drops
I hear it many times

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d

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!