The so-called photoelectric effect
I think it would be 0.0025 kg
Answer:
6 protons and 7 neutron
Explanation:
Carbon has a third isotopes named carbon-13
All carbon isotopes have 6 protons .
This is called atomic number. To make it up to 13 in carbon -13 you will need 7 neutrons and 6protons .
<span>C. Gravity acts on all objects in the universe.
think about Newtons Laws of Motion</span>