Proportional diameter of the moon: cm proportional diameter of the earth: cm ratio of (proportional diameter of earth)/(proportional diameter of moon) (show calculation.) size of the moon: calculate the radius of the moon using your value (not the accepted value) for the radius of the earth and your proportional diameter ratio from above. radius of moon (round to nearest km): km (show calculation.) and then (explain clearly in words the concepts behind the percent error (express as a percentage, one decimal place)% (show calculation.) turn in this completed report form by the required due date. important include your printout of the photo of the lunar eclipse and associated drawings and measurements. don't you will lose points if you don't include the photo with all the drawings and measurements clearly indicated.

Amajor impediment to wide acceptance of electric vehicles even on the part of people who use their cars almost exclusively for commuting is the inability to use their electric vehicles for occasional extended trips. in an attempt to make purchasing electric vehicles more attractive to commuters, one electric vehicle producer is planning to offer customers three days free rental of a conventional car for every 1,000 miles that they drive their electric vehicle. which of the following, if true, most threatens the plan's prospects for success? (a) many electric vehicles that are used for commercial purposes are not needed for extended trips. (b) because a majority of commuters drive at least 100 miles a week, the cost to the producer of making good the offer would add considerably to the already high price of electric vehicles. (c) the relatively long time it takes to recharge the battery of an electric vehicle can easily be fitted into the regular patterns of car use characteristic of commuters. (d) although electric vehicles are essentially emission-free in actual use, generating the electricity necessary for charging an electric vehicle's battery can burden the environment. (e) some family vehicles are used primarily not for commuting but for making short local trips, such as to do errands.