What is the height of a building (in meters) if it takes a rock 3.8 seconds to drop from its roof?

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

Which notation is used to represent an alpha particle? a. b. c. d.

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?