A graduated cylinder contains 25 mL of water and has a mass of 68 g. A small stone was dropped into the water and the water level rose to the 30 mL mark and the new mass is 78 g. What is the density of the stone?

Which of the following objects could an electromagnet lift?

Julie puts a backpack on the resistance arm of a lever. What would you do to decrease the force input needed to lift the backpack with the lever?

In which of the following media will sound waves travel fastest?

Select the product of radioactive decay that has the greatest ability to penetrate matter.

A skier traveling at 30 m/s falls and comes to rest 10 seconds later. What is her acceleration?

Which of these substances has the highest specific heat?

Which group has 8 valence electrons in its elemental form?

Select the situation that will result in the greatest gravitational force between two bodies.

The flow of electricity through a light bulb filament can be compared to the flow of water down a waterfall. In such a comparison, select the property of the waterfall that would be analogous to the voltage across the light bulb.

A washing machine is plugged into a wall outlet that has a voltage of 240 V. The total resistance present in the machine's wiring is 12 ohms. What current runs through this circuit?

Select the scenario in which an airplane does have kinetic energy, but does not have gravitational potential energy.

Select the method of heat transfer that causes the iron handle of an iron skillet to get hot when the skillet is heated on a stove.

Electromagnetic radiation moves from the Sun to the Earth continuously. The wavelengths emitted include infrared, ultraviolet and visible light. Which of these arrives first if all are emitted from the Sun at the same time?

How are isotopes different from the given element characterized?

In which family on the periodic table are the most reactive metals located?

Using the periodic table, determine the number of neutrons that MOST copper atoms contain.

How are ionic compounds different from covalent compounds?

Ms. Gibson has an unknown white, crystallized substance. She needs to determine if the substance is an ionic of covalent compound. After conducting many tests, determine the correct outcome that identifies the substance.

Select the type of ion that is produced when a strong acid is added to water.

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