Physics Past Questions and Answers

The amplitude of a wave is the

ln order to obtain a sound note of a high pitch from a wire stretched by a constant tension, the wire must be

If the position of resonance in a resonance tube is 16.50cm from open end of the tube, calculate the distance from the open end to the next position where resonance occurs. (Neglect end-correction)

Thunder is usually heard some seconds after lightning is observed because

Using the data on the diagram above, calculate the potential difference across the 20- Ω resistor. (Neglect the internal resistance of the cell)