Work of 2300 J is done by stirring a perfectly insulated beaker containing 75 g of water. What is the change in the internal energy of the system?

Part a constants huck finn walks at a speed of 0.60 m/s across his raft (that is, he walks perpendicular to the raft's motion what is huck's velocity (speed and direction) relative to the river bank? express your answer to three significant figures and include the appropriate units. relative to the shore)

Convection currents are caused by differences in what two things?

Directions: count the number of atoms. ar co2 na3po4 so3 nac2h3o2