Who ever answers this problem will be voted Brainiest. Please hurry, I'm timed.

Which object in a classroom exerts the greatest gravitational force?

A. pencil
B. desk
C. eraser
D. book

In some states the highway patrol use plane carrying radar device5s to monitor traffic as the plane flies over traffic the radar device can tell the officers how fast each car is moving at the moment in time the radar device determines the cars

Which of these should be re portable health diseases to protect public health? a- obesity b- measles c- diabetes d-lung cancer

Which one is not a part of the base of the cranial cavity? a.scala anterior b.scala media c.scala lateralis d.scala posterior