Answer:
A) Electrons only
Explanation:
In quantum mechanics, "electron cloud" refers to the region of space where electrons can be found in an atom. In fact, in quantum mechanics, it is not possible to predict the exact position of the electrons, so there is a region where electrons have a certain probability to be found.
Answer:
1913
Explanation:
In 1913, Niels Bohr proposed a theory for the hydrogen atom, based on quantum theory that some physical quantities only take discrete values.
25% SS, 50% Ss, 25% ss, or 75% smooth, 25% wrinkled
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<span>View the entire bridge as the system, and find the torque about a pivot chosen to eliminate the torque from one of the unknowns
</span>Find the sum of the torques ∑ τ Q about the right pier Q of the bridge. Remember that counterclockwise torque is positive
∑τQ - 2MgL− 3FpL
<span>The sum of the torques is zero
</span>
FP = 2/3 Mg