Micah is investigating the transformation between potential and kinetic energy within a system. he uses a swinging pendulum in his investigation. he records his observations of the pendulum at different positions and creates the table below.

kinetic and potential energy of a pendulum

position kinetic energy (joules) potential energy (joules)

1 0 50

2 25 25

3 50 0

4 25 25

5 0 50

which statement best describes the energy transformation in michah's investigation?

the total energy of the system is maintained as energy is transformed.

the total energy of the system increases as kinetic energy is created.

the total energy of the system decreases as potential energy is destroyed.

the total energy of the system changes as energy is added to it.

The total energy is maintained as energy transformed

Explanation:

The kinetic energy and potential energy is been maintained as each of the experiment is been performed which is 50Joules

the total energy is maintained as the energy transformed. Good luck

Explanation:

the grams   of   barium that   are in   2.3 x 10^23   atoms of barium   is   52.4 g (answer c)

    calculation

mass = moles   of ba   x molar   mass of ba

  molar mass of ba from periodic table=   137.3 g/mol

  use the   avogadro's law   constant   to   calculate the moles of barium

  that   is     1 mole =   6.02   x 10^23 atoms

                    ? moles = 2.3 x 10^23   atoms

by cross   multiplication

=(1 mole   x 2.3x 10^23 atoms)   / 6.02   x10^23 atoms)=   0.382   moles

mass   is therefore = 137.3   g/mol x 0.382 mol = 52.4 ( answer c)

explanation:

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