The speed of sound in air is about 340 m/s. what is the wavelength of sound waves produced by a guitar string vibrating at 512 hz? a. 5 b. 25.5 c. 0.25 d. 3.6 e. 0.66 f. 30

Phase changes are chemical changes. true or false

Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.