All vehicles carrying passengers for hire, all buses carrying passengers and all vehicles carrying explosives or flammable liquids must always stop no closer than and no farther than from railroad tracks.
a. 5 seconds, 10 secondsb. 50 feet, 100 feetc. 25 feet, 50 feetd. 15 feet, 50 feet

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a study of twenty 4th grade classrooms in which researchers ask the schools to systematically vary the time of day reading is taught, and collect weekly assessments of reading comprehension for each child over a three-month period.the collection of data, by a playground designer hired by the superintendent of schools, about the physical dimensions of school playgrounds, presence of fencing, and the kinds of equipment currently provided.a feasibility study for implementing a year-round school program, focusing on economic issues such a facilities utilization and transportation costs.an analysis of aggregate data comparing statewide high school graduation rates provided by the state department of public instruction, using county tax information.

How did the southeast asia treaty organization (seato) carry out the united states policy on containment? a. seato promoted the creation of united nation military bases to create regional defense. b. seato founded an organization seeking to educate southeastern asian countries on communism. c. seato established a regional economic union to promote monetary security. d. seato sought to provide regional security in southeast asia by establishing alliances.

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a researcher conducts a comparison of the comments made in a publicly available blog and the blogger's comments on a similar topic in a weekly magazine. undergraduate students in a field methods class are assigned a research question and asked to interview another classmate, to be followed by a class discussion on interview techniques. a cognitive psychologist enrolls undergraduate students for a computer-based study about the effect of mood on problem-solving behaviors. a researcher sets up a meeting with the superintendent of a large and diverse public school system to get data about the ethnic composition of the school system and the number of students receiving free lunches.