In the bohr model of the atom, electrons exist in fixed orbits and they cannot move from one level to another. true false

The softest and hardest minerals are: softest hardest

Which situation will produce the greatest change of momentum

Which of the following is a true statement about the acceleration ~a of the pendulum bob ~a is equal to the acceleration due to gravity. ~a is perpendicular to the bob’s trajectory. ~a is equal to the instantaneous rate of change in velocity. ~a is tangent to the bob’s trajectory.