Prolonged sleep deprivation results in . Group of answer choices some perceptual illusions difficulty in physical exercise improved mental concentration impaired attention and vigilance

Mr. mann's science students were experimenting with speed. they set up a 1 meter (100 cm) track. the students used balls instead of cars. the balls were different sizes and made of different materials. four at a time, students rolled balls around the track to see which had the fastest and slowest speeds. some of their data are shown in the table. which ball will take the longest to complete one lap around the track?

This is a government controlled by one person with absolute power. question 3 options: communist democratic autocratic parliamentary

Americans often refer to a country that is not the united states as a