The atom in an excited state has more energy and is less stable than the atom in the ground state.
, to hit nails into a piece of wood or a wall, or to break things into pieces.
Answer:
0.5 m/s²
Explanation:
according to Newton's second law, we are goven a relationship between force, mass and acceleration, with the formula:
F = m×a
F for force
m for mass
a for acceleration
we use the given data and get:
20 = 40×a
we find a=20/40=0.5m/s²
Answer:
The moment of inertia is 
Explanation:
The moment of inertia is equal:
If r is 
and 
Solar cells are used to trap sunlight energy (light energy) and convert it to electric energy for domestic and other purposes.
