The kinetic energy of an object is given by:
KE = 0.5mv²
KE = kinetic energy, m = mass, v = speed
Given values:
KE = 0.161J, v = 2.33m/s
Plug in and solve for m:
0.161 = 0.5m(2.33)²
m = 0.059kg
Yes a twig will float on water
1 g/cm³- density of water
roughly 0.50–0.75 g cm-3-density of twig
because a twig is less dense than water the twig will float
The two vehicles experience a force of the same magnitude due to Newton's third law
Mechanical advantage is a quantity that measures how much a machine multiplies force or distance.
The numbers refer to the mass of each carbon atom.
Since the atoms are all Carbon, the number of protons in each atom is always the same ... if the number of protons changed, then you'd have an atom of something else, not Carbon. The only way the atomic mass can change and still be an atom of the same element is by adding or removing NEUTRONS.
Carbon-14 has two more neutrons in the nucleus of its atoms than Carbon-12 has.