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2. a rock is shot straight up into the air with a slingshot; assume no air resistance. the initial state is when the rock is sitting the slingshot, waiting to be launched. the final state is after the rock has been launched, and when it has reached its maximum height.

2a. draw a system schema in the energy flow diagram.

2b. list all the energy storage modes involved in the initial state. explain how you know they’re present. explain what will happen to the amount of each energy storage mode from the initial state to the final state.

2c. list all the energy storage modes involved in the final state. explain how you know they’re present.

2d. complete the energy flow diagram in 2a.

Some technological solutions to problems like global warming meet the specific needs and situations of local communities. an example from india involves converting the solid waste from cattle into clean-burning fuel for cooking. this reduces the amount of greenhouse gases, specifically methane and carbon dioxide, released into the environment from wood fires. when evaluating the feasibility of implementing this solution, computer models are used to weigh costs against benefits. what factor is least likely to impact the decision on adopting this technology?

Astudent is looking through a microscope at some cells of an onion root tip. many of these cells are undergoing division since the root tip grows quickly and requires more cells. which cell most recently underwent metaphase? w x y z

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?