Calculate the speed for a car that went a distance of 12 kilometers in 2 hours time

How do economists measure the success, or shortcomings, of the economy?

And whereas our provinces in north america, have been frequently ravaged by indian enemies, more especially that of south-carolina, which in the late war, by the neighboring savages, was laid waste with fire and sword and great numbers of english inhabitants, miserably massacred, and our loving subjects who now inhabit them, by reason of the smallness of their numbers, will in case of a new war, be exposed to the late calamities; inasmuch as their whole southern frontier continueth unsettled, and lieth open to the said savages. and whereas we think it highly becoming our crown and royal dignity, to protect all our loving subjects, be they ever so distant from us; to extend our fatherly compassion even to the meanest and most unfortunate of our people, and to relieve the wants of our above mentioned poor subjects; and that it will be highly conducive for accomplishing those ends, that a regular colony of the said poor people be settled and established in the southern territories of carolina."- from  charter of georgia, 1732 based on the passage, it can be determined that the main reason the king of england wishes to establish a new southern colony is becausea)he wants to provide a safe haven for all of his loyal british subject'sb)he wants to protect the fathers of each family in order to keep them safe.c)he wants to make sure there will be enough soldiers in the event of another war.d)he wants to use the new colony to protect the other colonies from attack

Running and sleep. sufficient sleep is important for adolescents for both their neural and psychological development. despite this, daytıme sleepiness and poor physical and psychological functioning related to chronic sleep disturbances are common. there is a growing body of evidence that exercise is associated with both better sleep and improved psychological functioning sixty participants were recruited from a high school in northwesten switzerlandthey were randomly assigned to either a running group or a control group, 30 to each group the running group ran every moming for a little over 30 minutes on weekdays for a three-week period. all participants used a sleep log for subjective evaluation of sleep, and sleep was also objectively assessed at the beginning and end of the study using a sleep electroencephalographic device that measured quantities such as sleep efficiency and time spent in the four different sleep phases. running was found to have a positive impact on both objective and subjective measures of sleep functioning what are the explanatory variable(s) and the response variable(s)? (a) outline the design of the experiment (b) (c) here are some more details on the treatment and control groups. all participants arrived at school at 7 a.m., and the running group did two laps on the track and then ran cross countrv in groups of at least four people for 30 minutes the control group remained seated at the track, worked on horpework. and interacted with each other. when the runners returned, all participants prepared for school and ate a breaktast that was provided. iwhy do you think the experimenters had the control group arrive at 7 am interact withdassmates and have breaktast together? explain. do you think having the control eroup do these activities is important for the types of conclusion that can be reached? how?