lily took 57 seconds to walk from classroom to library . if the distance between the classroom and library was 38 m, at what average did lily walk

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.

Heterogeneous mixture with larger particles that never settle is

In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane