Mechanical energy is the sum of an object’s potential energy and kinetic energy. consider the positions of this swinging pocket watch. at which positions will the potential energy be the highest? assume the pendulum can swing forever (ignore friction).

This line graph compares the growth of plants that were kept in the sun for different amounts of time.a)  on day 7, the plants kept in the sun for 3 hours were how tall? b)  on day 7, the plants kept in the sun for 6 hours were how tall? c)    on day 10, the plants kept in the sun for 9 hours were how tall? d)  on day 11, the plant that was grown with 1 hour of sunlight was how tall? e)  based on the graph, the plant grows best in what amount of sunlight?

What is the molar mass of a gas that has density of 2.054 g/l

Tell me the iupac name of the following compounds: