Aclass is trying to the time it takes for people to react. one student holds a meter stick between the fingers of another student. the student holding the meter stick releases and the other student is told to close their fingers as soon as they see the meter stick closed. the distance the meter stick falls before being caught is measured and a time of reaction is calculated. since, there will be some difference between the reaction times of students, the average of all the results is found. clearly, a natural variation is impossible to eliminate. however, some steps can be taken to improve the reliability of the results. which of these might reduce the variability of the data? a. have each student do multiple trials. b. time the reaction as opposed to measuring the distance and calculating a time. c. ensure that the finger separation is constant. d. ensure that everyone drops the meter stick from the same height. e. average all distances before calculating a reaction time. f. measure the distance to the same precision for every student.

Convert 9.75 millimeters to centimeters.centimeters

Consider the motion of the balloon and its air contents in terms of momentum. in step 1 above, the total momentum of the balloon and its contents was zero. recall that momentum = mv. both the balloon and the air inside it had a velocity of zero and therefore the total momentum was zero. now think about what happened when the air escaped from the balloon. a certain mass of air accelerated in one direction. in order to keep the total momentum of the system zero, the balloon itself (which has mass) had to accelerate in the opposite direction. use this scenario to you explain why the soda can rotates when the water squirts out of the escape holes. what was your hypothesis concerning the water-filled can? according to your data, do you think your hypothesis was correct? (be sure to refer to your data when answering this question.) summarize any difficulties or problems you had in performing the experiment that might have affected the results. describe how you might change the procedure to avoid these problems. give at least one more example of newton's third law in everyday life.

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water