Two blocks are pushed along a horizontal frictionless surface by a force of 20N to the right as shown above the force that the 2-kilogram block exerts on the 3-kilogram block is A-8N to the left
B-8N to the right
C-10N to the left
D- 12N to the right
E-20 N to the left

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Slab pull” is a type of tectonic plate movement that occurs due to the forces of mantle convection and results in the subduction of the lithosphere true or false