While moving in between areas of land glaciers erode the land around them, this eroded land leads to weathering from the sand and rocks eroded. Example The Grand Canyon
C, hydrogen bonds , i did this test last year and im in chemistry now, so its hydrogen bonds.
Calcium deficiency disease (hypocalcemia) --- like osteoporosis, osteopenia !!
Answer:
Fnet=F1+F2-F3=40+20-30=60-30=30N
F=ma
30N=30a
a=30/30
a=1m/s^2
Believe me , biology is another thing.
Sonar sends sound waves to the bottom that bounce back and tell the machine how far away the object is based on how long it takes for the sound wave took to come back.