True or false the metric unit used to describe weight as a measure of the force of gravity is called a newton

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?

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?