10.13) (9. (a) A ray of light passes through one surface of a glass prism at right angles to the surface

45°
45°

(i) State why the ray is not deviated as it passes through the surface into the glass
at A.
(ii) On Fig. use a ruler to help you draw the rest of the path of the ray, until it has
emerged again into the air.

please answer pleaseee​

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

Now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?