Describe how fuses and circuit breakers protect against electrocution and household fires. how do you restore a broken circuit after the problem has been corrected?

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 •  

The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).

What characteristics of hv2112 make it the best candidate to be classified as a thorne-zytkow object?