PLEASE ANSWER

These two blocks have the same mass. Which block would have more kinetic energy when it reaches the ground and why?

A. Block A would have more kinetic energy since it is higher and has more potential energy to transform into kinetic energy.
B. Block B would have more kinetic energy since it is traveling faster. than block A
C. Block A would have more kinetic energy since it has more mass than block B.
D. Block B would have more kinetic energy since it is closer to the ground. and doesn't have as much potential energy.

How does a hydroelectric power plant converts energy into energy.

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

These questions are based on the attached photo. the experiment is about burning magnesium metal with oxygen. 1. write the balanced chemical equation for the reaction you are performing. 2. calculate the mass of magnesium metal used in each trial. o trial 1: o trial 2: 3. calculate the actual yield of magnesium oxide for each trial. o trial 1: o trial 2: 4. magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. o trial 1: o trial 2: 5. determine the percent yield of mgo for your experiment for each trial. o trial 1: o trial 2: 6. determine the average percent yield of mgo for the two trials. your company currently uses a process with a similar cost of materials that has an average percent yield of 91 percent. if the average percent yield of this process is higher than that, this could save the company money. what is your recommendation to the company? support your recommendation using your data, calculations, and understanding of stoichiometry gathered from this lab.