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ladnerhailey16
09.10.2020 •
Physics
Which statement about an atom is correct? (1 point)
O The neutron has a negative charge and is found in the nucleus.
O The electron has a negative charge and is found outside of the nucleus.
O The proton has no charge and is found in the nucleus.
O The neutron has no charge and is found outside of the nucleus.
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Ответ:
The weight of the box is expressed as mg sin theta
The frictional force is expressed as the normal force times the coefficient of friction that is expressed as mu g cos theta.
By Newton's second law of motion, F = ma = mg sin theta - mu g cos theta
Thus, a = g (sin theta - u cos theta