Explain why a push-up test is muscular strength for some students and muscular endurance for others?

What is the name of the device that senses the current flowing,tripping the circut,and cutting off the electricity

If an online school program (i.e k12, ecot) assigns me a computer, would it be ok to use social media on it? would i get in trouble? i am not really sure from reading their terms and such.

What type of medicine to people take if they are lactose intolerance