How high does a 150 kg piano have to be lifted to have 8000 J of gravitational potential energy? A. 3.1 m

B. 5.4 m

C. 6.2 m

D. 1.2 m

Which additional product balances the reaction h2so4 + 2naoh → na2so4 + 2h2o 2oh h2o2 h3o

Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s.assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.

What is the specific heat of wood ?