To calculate MA = force needed/force used
Example
MA = 60/30 = 2
The mechanical advantage is 2
If a conductor wire is heated, its resistance decreases and conductivity increases.
D. Mineral and fossil matches from tests done on different continents.
Answer:
kinetic energy=1/2mv^2.
which is 4320000=1/2×m×23^2.
which is 4320000=1/2×m×529.
4320000=264.5m.
m=4320000/264.5.
m=16332.70~16333g
