I have all the answers here so take this
-- 'Ca' (Calcium) is an element.
-- The proton has a positive charge.
-- Nuclear fusion results in the synthesis of atoms of new elements.
-- H₂O (water) is a chemical compound.
-- Nuclear fission is a decay of the nucleus.
-- The atomic number of an element is the number of protons
in each atom of it.
-- I suppose you're using the Greek letter <span>η ('eta', not 'nu')
to represent the neutron.
-- I suppose you're using ' e ' to represent the electron.
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<span>A battery is the power source for DC. (C)
You COULD use a battery to get AC, but you'd need some electronics,
to take the DC from the battery and use it to generate AC.</span>
Due to the bucket not moving, the bucket will solely have potential energy. because potential energy=mgh, the energy of the bucket will equal 50(9.8)(3), which is 1470 joules.
the answer is C.
if the cost of it is too high, then the producer makes no product, resulting in an unsuccessful business