Name one difference between brass and aluminum.

A balloon is filled with 1500 mL of air at a pressure of 5 atm. What is the pressure of the balloon if the volume is changed to 2500 mL?

Which equation represents the total energy of a system?

This is a subatomic particle with a negative charge and very little mass.

What would be an example of Newton's first law

Multiple choice A set of water waves travels at 20.0 m/s, and 4.0 waves pass you in 2.0 s. What is the wavelength of the waves? 5.0 m 10 m 0.20 m 2.5 m

What would a drummer do to make the sound of the drum give a note of lower pitch?

Um atleta correu 400 metros em 80 segundos. Qual é sua velocidade média?

An object at free fall near the Earth's surface experiences constant velocity. True or false?

Ian walks 2km to his best friends house, the. Walks. 5km to the library. Then makes a 2.5 km walk home. The entire walk took 3 hours. What is his average speed in km/h?

What number equal 20