The intensity of a sound in units of dB is given by I(dB) = 10 log Io, where I and Io are measured in units of W m⁻² and the value of Io is 10⁻¹² W m². The sound intensity of a particular brand of washing machine is 51 dB. What is the sound intensity I in W m⁻²? Give your answer to 2 significant figures. NB: You may wish to input your answer in scientific notation. For example, to input a value of 3.4 X 10⁵, you would enter 3.4 * 10⁻⁵ in the input box. Sound intensity: W m⁻²