An airplane travels from st. louis to portland, oregon in 4.33 hours. if the distance traveled is 2742 km what is the airplanes average speed?

Apiano tuner uses a tuner to create a tone of 5.00 x 10² hz. when a key on the piano is struck he hears 5 beats per second. what is a possible frequency of vibration for the piano string? 2500 hz 1300 hz 605 hz 495 hz

Aphysical change is a change in the size, shape,, or stafe of matter true or false

Which types of electromagnetic waves have higher frequencies than the waves that make up ultraviolet light? check all that apply. radio waves infrared light microwaves gamma rays visible light x-rays