so classmate states that continental drift could not be possible because it would take far too much force to move tectonic plates. Describe the hypothesis scientists use to explain the movement of tectonic plates. Which hypothesis do many scientists think may explain the great force needed to move plates?
the cross section area of a hole is 725cm^2. Given that the area of a circle is A=3.14r^2 , find the radius of the hole.
Describe the motion of particles in a material when this ultrasound wave passes through? Pls help , confused? Thank you
What would be most useful to help make a simple compass a nonmetal bar,a round metal can,a small iron nail,or a Quartz needle
