Which of the following statements is true about the movement of sound waves?

A. they can only travel through a vacuum

B. they can travel through air only

C. they can only travel through a medium

D. they travel fastest in gaseous mediums

Which type (s) of electromagnetic radiation emitted by the Sun are absorbed by Earth's atmosphere and do not reach Earth's surface? A. long-wave radio waves, X-rays, and gamma rays B. short-wave radio waves and gamma rays C.

initially at rest. The bullet is traveling 300 m/s when it hits the wood block and sticks inside it. Now the bullet and the wood block move together as one object. How fast are they traveling?

If an element with an atomic number of 51 and an atomic mass of 121, how many neutrons does it have?

The energy associated with the motion and position of an object is called A. kinetic energy. B. potential energy. C. gravitational potential energy. D. mechanical energy.

What is the average velocity of atoms in 1.00 mol of neon (a monatomic gas) at 465 K? For m, use 0.0202 kg.

A constant tone is being applied to a speaker. The voltage across the speaker is 5 volts. The voltage across the speaker is increased to 15 volts in order to increase the sound level. What is the decibel gain, rounded to the nearest decibel?

When is the average velocity equal to the instantaneous velocity

Tightening a screw with a larger spacing between its threads requires fewer turns of a screwdriver than tightening a screw with smaller thread spacing. What is a disadvantage of the screw with larger thread spacing?

The role of plants in the water, oxygen, nitrogen, and carbon cycles

As pitch gets higher, wavelength gets?