Milan is measuring the density of ethanol. He weighs a bottle three times: first, empty; then filled with water; then filled with ethanol. Here are his
results:
mass of empty bottle = 30.0g
mass of bottle filled with water = 90.0g
mass of bottle filled with ethanol = = 78.0g
i Calculate the volume of the bottle.

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.

Amother used 150 watts of power to raise a 15 newton object in a time interval of 8.0 seconds. through what vertical distance was the object raised ?