| #3626 |
What is bulk modulus? |
Ratio of volumetric stress to volumetric strain |
| #3627 |
What is Young’s Modulus? |
Ratio of stress to strain in linear elasticity, Y = stress/strain |
| #3628 |
What is strain? |
Deformation per unit length caused by applied stress, ε = ΔL/L |
| #3629 |
What is stress? |
Force applied per unit area, σ = F/A |
| #3630 |
What is elasticity? |
Ability of a body to regain its original shape after removing the deforming force |
| #3631 |
What is viscosity? |
Resistance of a fluid to flow |
| #3632 |
What is capillarity? |
Rise or fall of a liquid in a narrow tube due to surface tension |
| #3633 |
What is surface tension? |
Force acting along the surface of a liquid, causing it to behave like a stretched membrane |
| #3634 |
What is buoyancy? |
Upward force exerted by a fluid on a body submerged or floating in it |
| #3635 |
What is Archimedes’ Principle? |
A body immersed in a fluid experiences an upward buoyant force equal to the weight of the fluid displaced |
| #3636 |
What is Pascal’s Law? |
Pressure applied to a confined fluid is transmitted undiminished in all directions |
| #3637 |
What is pressure? |
Force applied per unit area, P = F/A |
| #3638 |
What is relative density? |
Ratio of the density of a substance to the density of a reference substance (usually water) |
| #3639 |
How is density defined? |
Mass per unit volume, ρ = m/V |
| #3640 |
What is Bose-Einstein Condensate (BEC)? |
State of matter at near absolute zero temperature where particles occupy the same quantum state |
| #3641 |
What is plasma? |
Ionized gas with free electrons and positive ions, found in stars and neon lights |
| #3642 |
What is the main characteristic of a gas? |
No definite shape or volume; expands to fill the container |
| #3643 |
What is the main characteristic of a liquid? |
Definite volume but takes the shape of its container |
| #3644 |
What is the main characteristic of a solid? |
Definite shape and volume |
| #3645 |
What are the five states of matter? |
Solid, Liquid, Gas, Plasma, Bose-Einstein Condensate |
| #3646 |
What is the relation between force, displacement, and work in machines? |
Work = Force × Displacement in the direction of force |
| #3647 |
How does a pulley system reduce effort? |
By distributing the load across multiple ropes or wheels |
| #3648 |
What is the difference between speed and velocity in context of machines? |
Velocity considers direction, while speed is only magnitude; important for moving loads efficiently |
| #3649 |
How does an inclined plane reduce effort? |
By increasing the distance over which the force is applied |
| #3650 |
What is a compound machine? |
A machine made up of two or more simple machines working together |