E = mc²
E = 0.235 kg · (3×10⁸ m/s)² = 0.235 · 9×10¹⁶ kg·m/s²
E = 2.115×10¹⁶ J
The answer is d) 2.12×10¹⁶ J
Answer:
You should have noticed that the number of atoms in the reactants is the same as the number of atoms in the product. The number of atoms is conserved during the reaction. However, you will also see that the number of molecules in the reactants and products are not the same.
The movement of stars near the center.
Answer:
The options are approximations of the exact answers:
A) 
B) 
C) 
D) Toward the inner wall
E) 
Explanation:
A) The electric field in a parallel plate capacitor is given by the formula
, where
and in our case
and, for air,
, so we have:

B) The K+ ion has one elemental charge excess, so its charge is
, and the force a charge experiments under an electric field E is given by F=qE, so we have:

C) The potential difference between two points separated a distance d under an uniform electric potential E is given by
, so we have:

D) The electic field goes from positive to negative charges, so it goes towards the inner wall.
E) The work done by an electric field through a potential difference
on a charge Q is
, and is equal to the kinetic energy imparted on it, so we have:

It would impact the size by how far it is in km or light years