The type of mirror used by dentists to inspect the teeth of patients is a

In an RLC series circuit at resonance, the voltages across the resistor and the inductor are 30 V and 40 V respectively. Determine the voltage across the capacitor.

The diagram above illustrates a velocity-time graph. Determine the distance between X and Y.

A sound of frequency 512 Hz reaches a listener 100 m away. If the sound travels in air at s.t.p., what is its wavelength?
[speed of sound in air = 331 m/s]

A charge of 10 C is transferred across a potential difference of 220 V. Determine the work done.