When evaluating a velocity time graph, how can you tell if an object is stopped? O When the line of the graph is at 0.
O When the line of the graph is above the x-axis.
O When the line of the graph is below the x-axis.
O None of the above.

Which articulations allow for greatest range of motion?

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.

Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=