Ed Fisica semana 34 4to secundaria

47. a student is frightened by a loud noise, which results in a hormone being released into the blood. the hormone causes the student's heart to beat rapidly. the two systems that work together to cause this reaction are the endo- crine system that secretes the hormone and the (1) nervous system (3) excretory system (2) reproductive system (4) digestive system

Atrajectory has an initial velocity of 1,000 meters per second, and 5 seconds later, it has a velocity of 500 meters per second. which is the acceleration of the trajectory?

Padma has written a paper on the effects of the black death, a plague that struck europe in 1347 and killed millions of people. she focused on three major results of the plague: • a smaller population after the plague led to higher wages and greater independence for workers. • the power of the catholic church weakened because so many members had died and others had lost their faith. • a lack of farm workers led more people to raise livestock rather than planting crops, changing the european diet. read her conclusion: it does not seem right to say that an experience as horrifying as the black death had any “good” sides. still, the changes that followed the plague improved the lives of peasants. people who had previously lived in poverty, forced to work for a single employer, now had higher wages and the freedom to change jobs. even so, the continent had been devastated and would take many years to recover. which statement best evaluates her conclusion? a. the conclusion effectively summarizes all the writer’s main points. b. the conclusion is engaging, but it introduces an unnecessary new idea. c. the conclusion is engaging, but only summarizes one of the writer’s points. d. the conclusion is engaging but it does not summarize any of the writer’s main points.