Pls Help I will award brainiest to the person with the best answer!!

Max takes lucky nickel to the wishing well before his physics exam. Eager to review, he decides to calculate the depth of the well as he wishes. He pulls out his phone starts the stopwatch and flips the coin up into the air. the coin reaches a maximum height of 2.5 meters before travelling down the well shaft. The total time from flip to splash is 3.7 seconds. A. What velocity did the coin have when it left max's hand? B. How far down from Jadens hand is the water surface?

An unknown substance has a melting point of 1064 ∘c, is insoluble in water, conducts electricity as a solid, and is hard. given these properties, which of the following are possible identities for the unknown substance? check all that apply. view available hint(s) check all that apply. sio2 f2 au kbr

What produces light and all other electromagnetic waves? a) the photoelectric phenomena b) heated metals c) charged particles d) radioactive samples (pls explain if you can : )

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.