Part D Based on the formula that you developed in question 3, what is the area of the circle? How do you know your answer is correct? Explain.
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Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j

Idon’t quite understand this problem

You have 80 g of 60oc water and 80 g or 10oc water. what is the final temperature when the two are mixed? explain.