You will use your ultrasonic reference data sheet and yourut trigonometry chart for the following practice problems. calculate the 1st critical anglesnell's lawapproximately 27-28 degreesmaterial one is plexiglas. material two is aluminum. we also know that therefracted angle is 90°.approximately 25-26 degreesapproximately 26-27 degreesapproximately 24-25 degreeswhat is the first critical angle? otype here to search^6/4/2 material one is plexiglas. materials two is aluminum. we also know that the refracted angle is 90°. what is the first critical angle

the least common denominator is 40

points are handed out whenever you post answers.

brainliest answers are handed out by the person asking the question, so whether your answer is picked depends entirely on whether the asker bothers to pick

if you're asking about your rank, it depends on having a certain number of points and a certain number of brainliest answers. for example, at the time of this writing, i have 44338 points out of 15000 needed for the next (nearly triple the requirement! ) but i only have 24 out of 50 required brainliest answers. this number decays, meaning after a certain amount of time (i think about a month), the total number of brainliest answers you've earned doesn't count toward this total. (i've been stuck at the same rank for a long

the lesson to learn here is that you shouldn't worry about points or rank. chances are, no matter how good an answer you may provide, your efforts will go mostly unnoticed unless you focus on the newest/most active questions that get posted.

move it to the other side

step-by-step explanation: