The center of this seesaw is used to balance the board with the seats. The children can easily move up and down without much force. the seesaw is an example of wich simple machine?

Which of the following is a source of dissolved substances in the ocean? a. chemical weathering of rocks b. evaporation of water from the seas and ocean c. excretions from marine organisms d. melting icebergs and sea ice

Does sodium have a positive or negative charge after ionization?

The water molecule H2O is polar because it contains two polar single bonds and A. its molecule has a linear shape. B. molecules that contain polar bonds are always polar. C. its molecule has a bent shape. D.

Whay would happen to the reaction rate of a medication if the amount of collisions were increased?

How do the particles in each state of matter move

According to Rutherford, what does the nucleus contain?

When is alpha particle emission most likely to occur? A. When the nucleus has more than 83 protons. B. When the ratio of neutrons to protons in the nucleus is too high to be stable. C. When the nucleus has a mass of more than 83 amu. D.

What object is being acted on by balanced forces? A. A snowflake that falls and lands on a roof B. A skateboard that rolls increasingly faster down a hill C. A baseball that rolls to a stop in a field D.

The density of an object has the equation. If an object has a mass of 85 g and a volume of 92 cm3, what is its density?

Compute 214.056 + 9.3456. Round the answer appropriately