You will get no credit for merely writing down the final answer without showing any intermediate steps. You must also include units in your answer whenever required. A thunderclap is emitted by a raincloud 5 km away from you. How long does it take for you to hear the sound. A tuning fork emits sound with a frequency of 400 Hz.
Light is incident on a plane mirror.
The angle of incidence is . Calculate the angle of reflection. The image of some object produced by a mirror is larger than the object. Write a sentence or two justifying your answer. A system consisting of a spring on a block oscillates with a frequency of 6.3 Hz.