Acommunity of approximately 100,000 people has about 5 acres of landfill left that can be filled to about 30 ft deep with refuse compacted to somewhere between 600 and 800 lbm/yd'. what is the remaining life of the landfill? solution using the procedure just outlined, the first step is to define the problem. clearly, the answer does not require high precision because the data are not precise. in addition, the definition of the problem requires an answer in time units. the second step is to simplify the problem. there is no need to consider commercial or industrial wastes. estimate only refuse generated by individual households. the third step is to calculate an answer. all the necessary data are available except the per capita production of refuse. suppose a family of 4 fills up 3 garbage cans per week. if each can is about 8 ft' and if we assume the uncompacted garbage is at about one-fourth of the compacted density, say at 200 lb/yd', it is reasonable to calculate the per capita production as

What produces wave a)sound b) heats c)transfer of energy d)vibrations

Why is retrograde motion an apparent motion

98 points you will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. before you conduct your experiment, you need to form a hypothesis. a hypothesis is a prediction of what you think will happen in the experiment. the hypothesis is a statement that describes “if” a certain set of circumstances are present “then” there will be a specific result that will occur. record your hypothesis here: record the results from step one of the experiment (dropping the objects in the air): first trial: second trial: third trial: record the results from step two of the experiment (dropping the objects in a vacuum): first trial: second trial: third trial: did the experiment support your hypothesis? using the data from your experiment, describe why you believe your hypothesis was either proven or disproven. what forces were acting on the objects dropped in the air? what force was acting on the objects dropped in the vacuum? part two: comparing forces choose two forces and compare and contrast these forces. you must provide two ways that they are alike and two ways that they are different. you may make a list, write in paragraph form, or make a chart. choose two forces and compare and contrast these forces. these must be different forces than used in the prior question. provide two ways that they are similar and two ways that they are different. you may make a list, write it out, or make a chart.