Hi everyone, plx help me on this!
I've worked out frequency modulation but can't understand amplitude modulation ...
A sinusoidal carrier wave has a frequency of 750kHz and an unmodulated amplitude of 4.0V. The carrier wave is to be amplitude-modulated by a sinusoidal signal of frequency...
An ice-cube has a mass of 7.50 g. The ice-cube is at 0 °C.
Heat from the surroundings reaches the ice-cube at an average rate of 1.25 J / s.
How long does it take for all of the ice to melt?
(specific latent heat of fusion of ice = 333 J / g)
A 35.5 s B 55.5 s C 2000 s D 3120 s