If the frequency of a sound wave increases, the wavelength of the wave in air a. Increases
b. Decreases
c. Remains the same

A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?

What happens when a rubber rod is rubbed with a piece of fur?

Which radioisotope is used in dating geological formations?