*help, please* In the figure above, suppose that waves from the ship are sent down and reflected back up by the sunken ship. If it takes 2 seconds for the waves to travel from their source to the sunken ship and back, what is the depth of the sunken ship? (Assume that the speed of the waves is 1,500 m/s.)

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.

Which type of reaction is shown in this energy diagram? energy products activation energy reactants time o a. endothermic, because energy is released to the surroundings o b. exothermic, because energy is absorbed from the surroundings o c. exothermic, because energy is released to the surroundings o d. endothermic, because energy is absorbed from the surroundings

Aloaded 355 kg toboggan is traveling on smooth horizontal snow at 4.00 m/s when it suddenly comes to a rough region. the region is 6.60 m long and reduces the toboggan's speed by 1.00 m/s . what average friction force did the rough region exert on the toboggan?