What if an object traveled from position -6 m to -1 m, what is the distance traveled?

In which of the following cases is work being done on an object? question 2 options: pulling a trailer up a hill carrying a box down a corridor suspending a heavy weight with a strong chain pushing against a locked door

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

What kind of waves require a medium to travel? question 6 options: light waves mechanical waves all waves need a medium to travel electromagnetic waves