What’s the definition of the wavelength of a wave?

A piston oscillates with simple harmonic motion according to the expression. This oscillation creates a sound wave in air. What’s the amplitude of the oscillation? What’s the frequency of the oscillation? What’s the wavelength of the sound wave? If an observer moves toward the piston at 5 m/s, what frequency do they hear?

The capacitor below is initially uncharged. The switch is first thrown to position a. What is the current through the resistor as a function of time while the capacitor is charging? Be sure to show the direction. What’s the power delivered to the resistor as a function of time while the capacitor is charging? When the capacitor is charged to a potential difference of 13 V, the switch is thrown to position b. What’s the current through the resistor as a function of time while the capacitor is discharging? Be sure to show the direction. What’s the power delivered to the resistor while the capacitor is discharging?

What happens to the capacitance of two charged parallel plates when they are brought closer together?

The third law of thermodynamics concerns states …

The second law of thermodynamics state ….

At a given temperature and pressure, a certain reaction has

At 298 K the

Which definition (of the choices given) is the best definition of entropy?

Consider the Voltaic Cell shown below:  The battery consists of a Silver and Nickel electrode connected externally by a wire.  The red arrow shows the direction that electrons will flow when the electrodes are connected.  Answer the following questions… Is the Silver electrode the anode or the cathode? Which electrode will gain mass as the battery operates? What will happen to the as the battery operates? Which electrode would be marked with a (+) symbol?