C: the mechanical energy isn't conserved. Some energy was lost to friction.
Answer:
N / NEWTONS
Explanation:
Named after Isaac Newton, the man who discovered gravity
0.25 m/s squared
hope this helps x
The best thermal conductor is b. metal
Answer:
Archaeologist use radioactive isotopes to determine the ages of various objects, rocks and materials. This is called radioactive dating. Radioactive isotope Carbon-14 is widely used for this dating process.
Scientists use radioactive isotopes in agriculture to monitor or study the uptake and use of essential nutrients by plants from the soil. This helps to determine viability, productivity and nutritious ability of the plants on a piece of land.
Geologists use radioactive isotopes to trace leaks in underground water storage, pipes. Radioactive isotopes are effective tracers because their radioactivity can be easily detected.
