The position-time function for a cyclist is r(t)=3t2-2t+9. What is the displacement of the cyclist from t=10 to t=20 seconds?

A) 889 m

B) 999 m

The particles of an ice cube at 0°c (represented by the blue circles) come in contact with the particles of juan’s hand at 37°c (represented by the orange circles). which diagram correctly represents the temperature of the two substances and the direction of heat flow?

Abird sitting high in a tree is an example of what type of wnergy

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine