La longitud de una onda de la luz verde de un semáforo es de alrededor de 522 nm ¿ cual es la frecuencia de esta radiación ?

From the graph the speed of the snail in the first 20 seconds centimeter/second. after that, the snail remains in the same place for seconds

Agalvanometer has an internal resistance of 100 ω and deflects full-scale at 2.00 ma. what size resistor should be added to the galvanometer to convert it to a milliammeter capable of reading up to 4.00 ma, and how should this resistor be connected to the galvanometer?

What is work? how much work is done to move an object 0 meters?