Direct - push object
Indirect - pull object with rope
Waves can be classified as mechanical or electromagnetic based on how they travel through a medium. They can also be classified as transverse or longitudinal based on the direction of oscillation compared to the direction of wave propagation.
Forces are described by their magnitude, which measures the strength of the force, and their direction, which indicates the way in which the force is applied. These two aspects are essential in understanding the impact of forces on objects or systems.
All forces involve the interactions between objects, causing changes in motion or deformation. They are described by magnitude, direction, and point of application. Forces obey Newton's laws of motion and can be classified as contact forces or action-at-a-distance forces.
What two forces? If two forces go in opposite directions, and have the same magnitude, they will be balanced. Otherwise they wont'.
You say that the two forces are in equilibrium.
The two ways are: Heterogeneous Homogeneous
Two ways are by temperature and brightness
what two ways do forces work?
elevation and shape
Public and Private
Covalent bonds can be classified as intramolecular forces.
Fixed Bridges or Moveable Bridges
spectrum and temperature
It is both a vascular and living organism.
force can be classified as contact and noncontact
See the link below for details about clouds classification.
How are elements classified