Why do scientists ask questions?

A student look at ocean waves coming into the beach. An oceanwavd with more energy will A. Have a greater height B. Have a greater period C. Travel toward the beach faster D. Strike the beach with greater frequency

Classify which of the following is a substance: tablero salt, seawater or sand? Explain how you know.

Explain the changes in kinetic and potential energy that occur when using newton cradle

Which of these is not a gas? O A. Oxygen O B. Gravity O c. Helium O D. Hydrogen

A canoe is floating down a river with a velocity of 35 meters per minute when it suddenly approaches a waterfall. if the waterfall drop 30 meters, how far put will the canoe land?

A sample has a density of 30 g/ml. there is 60 ml of this substance. how much does it weigh?

Forgetting takes place only in short-term memory.

What is the simplest relationship between the angular wavenumber k and just one of the other kinematic variables? Express your answer using only one of the other kinematic variables plus constants like π.

The pilot of an airplane notes that the compass indicates heading west. The airplane's speed relative to the air is 100 km/h. The air is moving in a wind at 25.0 km/h toward the north.

How do you get a resultant factor? A. Add two or more vectors B. Add two scalars C. Multiply two scalars D. Multiply two vectors