If a full wave rectifier circuit is operating from 50 Hz mains, the fundamental frequency in the ripple will be Hz 50
Hz 70.7
Hz 100
Hz 25

Prompta snowboarder stands at the top of a hill and decides to see if he can increase his speed on his next trip down the slope. describe one thing the snowboarder could do to incrlase his speed on the slope. explain why this would cause his speed toincrease relate one of newton's laws to this problem.

Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide?   kg • what must the total momentum of the system be after the train cars collide?   kg •  

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above