Which of the following statements about physical models is not true?
a.
physical models are often three-dimensional representations.
b.
physical models are used to represent an object or event.
c.
physical models are usually in the form of a graph.
d.
physical models can be used to depict microscopic objects.

What are segments of dna that code for a particular trait. a combination of dna and proteins make up what

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.