HELP PLEASE!!Think about the activities you have carried out over the last three days. Describe two activities that involved physical changes and two activities that involved chemical changes. Choose everyday activities. Do not use any activities you did in school as part of a science lab. How do you know which type of change was involved in each case?

fire could start, buildings collapsing, and ash falling from the sky.

explanation:

this is because the buildings or plants could catch on fire and the buildings would most likely collapse. lastly ash would fall because all the burning would cause ash to fall from the sky.

hope this .

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.