What times are the moon phases visible? my science teacher said that the phases of the moon are only visible at sertant times of the day. did i hear him right?

=force × distance a. work b. velocity c. pressure d. momentum

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions