An unknown substance has a mass of 15 g and a volume of 4 cm3. Calculate the density of the unknown substance.

How do most canyons form? A. Wind deposits sand to form large features called sand dunes. B. Rivers gradually build up eroded sediment over millions of years. C. Volcanoes repeatedly erupt and build up thick layers of lava. D.

In a swimming pool, where is the greatest fluid pressure?

how could you measure the amount of elastic potential energy in a streched rubber band? think about the definition of energy when planning your investigation

Substances with weak intermolecular forces tend to be in the gas state at room temperature. moderate intermolecular forces are required to liquefy or solidify a substance at room temperature.

What are possible units of speed or velocity? A. km/hr B. sec/m C. kg/sec D. m/sec2

Charlotte, a 60.0-kg skin diver, shoots a 2.0-kg spear with a speed of 15 m/s at a fish who darts quickly away without getting hit.

All objects are attracted to each other by the force of a. weight. b. mass. c. inertia. d. gravity.

landslides and mudslides caused by lava flows are ___ deadly than the lava flow itself. a. more b. less

3. How is electric potential different than electric potential energy?

Ethan pushes a wooden box across a carpet floor then he pushes the same box across a smooth marble floor why does Ethan find it easier to push the box on the marble floor than carpet floor