Astudent has 4 different containers each filled with a different liquid. how could they determine which liquid is the most dense.

If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?

Why should seat belts not be mandatory quick plz

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.