Sandy rubs a rubber rod with a piece of animal fur. the total charge of the system before rubbing is zero. the system is made
up of the rubber rod and the fur. initially, the charge on the rod is zero and it is electrically neutral. the same is true for the fur.
when sandy rubs the rubber rod with the fur, the rubber rod acquires negative charges. how does the system change, overall,
based on the law of conservation of charge?
a)
the total charge of the system is now negative rather than neutral.
b)
although the rod becomes negatively charged, the piece of fur remains
neutral.
if the rod becomes negatively charged, then the fur becomes positively
charged.
d)
both the rod and the piece of fur have become negatively charged during
the rubbing

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

It appears that people who are mildly obese are less active than leaner people. one study looked at the average number of minutes per day that people spend standing or walking. among mildly obese people, the mean number of minutes of daily activity (standing or walking) is approximately normally distributed with mean 376 minutes and standard deviation 64 minutes. the mean number of minutes of daily activity for lean people is approximately normally distributed with mean 528 minutes and standard deviation 107 minutes. a researcher records the minutes of activity for an srs of 7 mildly obese people and an srs of 7 lean people. use z-scores rounded to two decimal places to answer the following: what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 mildly obese people exceeds 420 minutes? what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 lean people exceeds 420 minutes?

Which two transformations are applied to pentagon abcde to create a'b'c'd'e'? (4 points) translated according to the rule (x, y) ? (x + 8, y + 2) and reflected across the x-axis translated according to the rule (x, y) ? (x + 2, y + 8) and reflected across the y-axis translated according to the rule (x, y) ? (x + 8, y + 2) and reflected across the y-axis translated according to the rule (x, y) ? (x + 2, y + 8) and reflected across the x-axis