Answer: The balance of oxygen and carbondioxide is made due to respreration and photosinthesis. As we leave carbon dioxide and take in oxygen the ballance of carbon dioxide and oxygen is made. And during the photosinthesis of plants the balance of carbon dioxide and oxygen is made.
Answer:
3.1×10⁻¹¹ N
Explanation:
Use Coulomb's law:
F = k q₁ q₂ / r²
F = (9×10⁹) (6.0×10⁻¹⁰) (2.3×10⁻¹⁵) / (0.02 m)²
F = 3.1×10⁻¹¹
When a vacuum pump removes the air within the can, there is no more air molecules bombarding the inner surface of the can. Since the inner pressure=0, the atmospheric pressure will crush the can. Atmosoheric pressure is usually =1.3*10^5Pa.
This is a derived unit. It's a combination of the units for mass, length, and time.
