transformer of 24V is used, what is the DC output voltage with and without filter capacitor?( full wave rectifier)​

What are two different ways you could find the value of a? explain these methods.

While preforming an experiment involving a reaction between two chemicals the scientist observes that the reaction container has become warm the observation is an example of

What is the period of a wave traveling 5 m/s if its wavelength is 20 m/s