None of the above
mass is measurement of how much stuff in inside something.
if you freeze or heat an object, you merely change the state of the object. the mass is conserved.
if you change the elevation, nothing happens to the mass. the stuff will not leave the object.
so it is None of the above
This is called an organ. Examples of organs are: your heart, brain, lungs, liver, stomach etc.
The child is thrown for 7 seconds
Answer:
1600 N
Explanation:
pascals principle says..

so lets do

so multiply one half (2/4 simplified) by 3200
1600 is equal to x
1600 N
YAAAAAAAAAAAAAAY
Answer:
M.E = mgh
given, m=400g = 400/1000=0.4kg
h=1.75m
g=9.81m/s²
M.E =0.4×9.81×1.75
=6.867J