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how made the name science

Mr. Smith is standing 50m from a large bell. With his mighty throwing arm, Mr.Smith throws a rock at the bell and he hears the sound of the bell 4.5s later. If the speed of sound is 330 m/s, what was the speed of the rock in the air?

Jack the Jaguar can run for only 1.0 min at 13.0m/s before he has to stop to rest, while Zeke the zebra can gallop at 7.25m/s for 5.0 min. How long does Zeke actually have to run for to elude Jack? Can Jack catch Zeke for lunch if they are initially 350m...

put all the letters in a hat. What is the p(vowels)= 5/26 p(first half of alphabet -13)= 13/26=1/2 p (v and f) p (vc) p(v or c) not sure how to do the and question or the "or" question and not sure what v with a little c up to the right means

x + 2sqrt(x ^ 3 + 3x ^ 2 + 5x + 6)

Mr. Smith is standing 50m from a large bell. With his mighty throwing arm, Mr.Smith throws a rock at the bell and he hears the sound of the bell 4.5s later. If the speed of sound is 330 m/s, what was the speed of the rock in the air?