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Draw a formula triangle for speed, distance and time. Working clockwise from the top, enter D for distance, T for time and S for speed. Use the formula triangle to work out the correct...
Velocity-time graphs show how the velocity (or speed) of a moving object changes with time. These graphs also show if the object is moving at a constant speed or accelerating, decelerating,...
Velocity is a vector and thus has a direction. Instantaneous velocity \ (v\) is the velocity at a specific instant or the average velocity for an infinitesimal interval. Instantaneous speed is the magnitude of the instantaneous velocity. Instantaneous speed is a scalar quantity, as it has no direction specified.
Explain Bohr’s theory of the hydrogen atom. Explain Bohr’s planetary model of the atom. Illustrate energy state using the energy-level diagram. Describe the triumphs and limits of Bohr’s theory.
Describe Rutherford’s experiment and his model of the atom; Describe emission and absorption spectra of atoms; Describe the Bohr model of the atom; Calculate the energy of electrons when they change energy levels; Calculate the frequency and wavelength of emitted photons when electrons change energy levels; Describe the quantum model of the atom
Times shorter than $10^{-12}$ second have been measured, but by a different technique. In effect, a different definition of “time” has been used. One way has been to observe the distance between two happenings on a moving object.
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Explain the relationships between instantaneous velocity, average velocity, instantaneous speed, average speed, displacement, and time. Calculate velocity and speed given initial position, initial time, final position, and final time.
